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This work examines the natural convection flow of an incompressible, viscous, and electrically conducting fluid down a vertical flat plate in the presence of conduction, as well as the effects of suction, magnetic field, viscous dissipation, porous medium, and heat generation. The governing momentum and energy equations have numerical solutions. The impacts of suction, heat production, magnetic, porosity, and viscous dissipation parameters on two-dimensional flow are discussed. Graphical representations of the velocity profile, temperature distribution, skin friction, rate of heat transfer, and surface temperature distribution are shown. The presence of porous media and improving suction values improves the friction drag but diminishes the energy transfer. The thermal production parameter raises the energy inside the flow but diminishes the heat transfer coefficient. This work attempts to offer important insights into these intricate processes by examining the effects of controlling factors including magnetic fields, porous medium, and suction parameters. This research conclusion may find applications in coolers, heat exchangers, and environmental remediation technologies that are more effective, advancing engineering and sustainable practices. [ABSTRACT FROM AUTHOR]

This study consists of an investigation of the 3D convective flow of hybrid nanofluids (HNFs) within a bi-truncated pyramid equipped with adiabatic cylinders, with a focus on the enhancement of natural convection (NC) heat transfer (HT). The use of HNFs, which is based on the combination of two different nanoparticles (NPs), provides improved thermal conductivity and stability, and leads to significant advantages in thermal management systems. Numerical simulations based of the FEM were performed to analyze the effects of Rayleigh number (Ra), nanoparticle volume fraction (φ), and cylinders size (D) on the heat transfer and fluid flow (FF) within the pyramid. The results showed that at higher Ra and nanoparticle concentrations a significant enhancement of the HT occurs, and the average Nusselt number (Nua) was increased by up to 23% at a Ra = 106 and φ = 0.045. Concerning the adiabatic cylinders, it was found that the optimal cylinder diameter is D = 0.15, (balance between flow disturbance and heat transfer rate). The outputs of the current study are valuable in the optimization of the hybrid nanofluid applications for advanced thermal management solutions. [ABSTRACT FROM AUTHOR]

Purpose: The current investigation is concerned with the Soret effect along with chemical reaction and radiation on flow of an electrically conductive, viscous fluid through a perpendicular plate, which is porous with oscillatory suction. The aim of this study is to investigate the effects of first-order temperature and chemical reaction and the transverse magnetic field characteristics. The closed form of solutions are obtained using the governing equations for concentration, energy and momentum. The perturbation technique was applied to find the result for the velocity field, temperature profiles and concentration distributions. Furthermore, the impact of various nondimensional parameters on fluid flow variables on the temperature field, velocity field and concentration dispersal was analyzed and the results were depicted graphically. Moreover, the skin friction and the rate of mass transfer (local Sherwood number) were analyzed using tables. In this work, an unsteady 2D flow of a laminar, viscid (Newtonian), electrically conducting fluid across a semi-infinite perpendicular permeable plate under motion in its plane (x-axis) embedded in a constant permeable structure was investigated. Design/methodology/approach: In this work, an unstable 2D flow of a laminar, viscid (Newtonian), electrically conducting fluid across a semi-limitless perpendicular permeable plate under motion in its plane (x-axis) embedded in a constant permeable structure was investigated. The medium is considered to be under a transverse magnetic field with concentrated buoyancy effects. Furthermore, it is considered that no voltage is supplied, which indicates that there is no electrical field. The fluid properties are considered to be uniform. The concentration of the imparting species is considered as C′w at the plate; the concentration of the specimens away from the wall, C′8, is considered to be limitlessly less. The first-order chemical reaction is considered to be seen in the flow. Due to the semi-limitless plane surface considerations, the flow parameters are the functions of y′ and the time t′ only. The oscillatory suction velocity of the fluid at the plate normal to it is v′; initially, the plate relocates with the oscillatory velocity u′, in the direction of x that is in its plane. The pressure gradient is toward the x-axis. Findings: The analytical solutions were obtained using the above analytical method for a few values of the governing parameters, such as the magnetic parameter (M), the permeability parameter (K), Schmidt number (Sc), chemical reaction parameter (Kr), Grashoff number for the concentration (Gm), Radiation parameter (N), Prandtl number (Pr), Chemical reaction parameter (Kr), Grashof number for heat transfer (Gr) and Heat source parameter (s). The influence of M, K, Sc, Kr, Gm, N, Pr, Kr, Gr and s on the fluid velocity, temperature and the concentration over the semi-infinite porous plate was obtained. Furthermore, the numerical computation was carried out using MATLAB. Originality/value: In this chapter, the analysis of a free convective flow of a viscid compact, electrically conductive fluid was discussed during its flow through a plate in permeable condition with oscillatory suction with first-order temperature and chemical reaction and the transverse magnetic field. The problem formulation and the results were discussed. The following chapter explain the Soret effect of mass transfer and radiation with heat source on magnetohydrodynamics oscillatory viscoelastic fluid in a channel filled with porous medium. [ABSTRACT FROM AUTHOR]

This investigation uses the Tiwari and Das nanofluid model to enhance the heat transfer rate in Sutterby nanofluid over a Riga plate. The effects of heat source/sink, viscosity dispersion, and mass flow for water-based fluids are also considered in this work. Sutterby fluid has been utilized to investigate the rheological features of nanofluids. The transverse Lorentz force produced by the Riga plate assists in the flow down the plate by producing an electromagnetic field. The main aim of this investigation is to evaluate the presence of two different types of nanoparticles in water, specifically silicon carbide (SiC) and copper (Cu). Dimensionless variables are first used to convert the mathematical model into a non-dimensional form. The similarity approach is then used to further rewrite the non-dimensional partial differential equations into a set of similarity equations. The bvp4c function in MATLAB software provides a numerical solution to these equations. The effects on temperature and velocity profiles of many physical factors, including the Reynold number, heat source/sink, and Deborah number, have been analyzed and presented. Furthermore, using tables, a detailed analysis of the skin friction coefficient and local Nusselt numbers is conducted. The results show that convective flow is suppressed when solid nanoparticles are added to the base fluid. The velocity distribution improves as Deborah and Reynold's numbers get a higher value. Also, the temperature field improves by incrementing exponential and thermal heat source/sink parameters. [ABSTRACT FROM AUTHOR]

This work integrates the Boussinesq approximation and magnetohydrodynamic effects to investigate the dynamics of incompressible triple diffusive fluid flow along a linearly stretched surface. Novel insights are revealed by contrasting instances with opposing and helpful flows. The partial differential equations are symmetrically reduced using Lie-group transformations, which make the Runge–Kutta shooting technique easier to solve. The effects of concentration buoyancy ratio, magnetic parameter, concentration parameter, and Lewis number on temperature, velocity, and concentration profiles are explained through graphical displays. Our results show that in both flow situations, the velocity distribution is decelerated by the magnetic parameter, and the salt concentration distributions are similarly affected by buoyancy ratio factors. Additionally, a higher Lewis number is associated with lower mass and heat transfer rates in the opposing and assisting fluid. [ABSTRACT FROM AUTHOR]

The purpose of this investigation is to examine the impacts of fractional calculus on fluid dynamics and heat transfer of a nanofluid in drilling applications. More specifically, the study explores how free convection and electrical conductivity impact clay nanoparticles dispersed in engine oil—which is modeled as a Casson fluid—as they pass over a flat vertical plate. The key objectives are to: (1) determine the effects of memory effects at different timescales on temperature and momentum profiles via the Caputo–Fabrizio fractional derivative; and (2) analyze the consequences of varying different physical parameters such as magnetic field, Grashof number, nanoparticle volume fraction and Prandtl number. The objective of the investigation is to provide insight into controlling these parameters to optimize drilling processes. The Laplace method is applied to find solutions to the governing equations, and MathCad15 is utilized for illustrating the physical results. The results expose that the temperature and momentum fields are enhanced (at large times) when the fractional parameter is increased and both profiles show opposite behavior at small times. The heat transmission is enlarged with growing estimations of the volume fraction for clay nanoparticles, whereas the momentum field is declined by growing estimations of the volume fraction of nanoparticles. Further, the nanofluid motion declines by growing the magnetic field but accelerates by increasing the Grashof number. Further, this model has applications in engineering to optimize drilling operations, where performance and efficiency in refining depend upon controlling fluid flow and heat transmission. It can also be applied in fields where nanofluids are utilized to enhance heat transfer and fluid dynamics, such as petrochemicals, manufacturing and material engineering. Overall, this study establishes a vigorous foundation for further research and delivers a structure for exploring non-Newtonian NF systems from the perspective of magnetized-driven free convection flow. [ABSTRACT FROM AUTHOR]

In this study, the transportation of reactive species from argon (Ar) and helium (He) atmospheric-pressure plasma jets (APPJs) to water is comparatively investigated using two-dimensional (2D) fluid models. For the same gas flow rate and reactive species concentration at the jet orifice, the transportation efficiency of the Ar APPJ is found to be higher than that of the He APPJ by 3.7 times. This is primarily attributed to the difference in the gas flow between the Ar and He APPJs. Ar has a higher molecular weight than air, which allows the reactive species in the Ar gas flow to sufficiently contact the water surface. He is much lighter than air, and consequently, the He gas flow floats upwards and inhibits transportation. Increasing the gas flow rate can reduce the floating of He and enhance the transportation of all reactive species in the He APPJ, but can only improve the transportation of short-lived species in the Ar APPJ. The use of shielding air gas reduces the floating of He and promotes the production of reactive species in the plasma plume, thus, the normalised concentration of the reactive species in the He APPJ-treated water increases drastically by 30.3 times. The numerical results conform to the trends observed in the available experimental data, which explains the reason why the Ar APPJ has stronger sterilization and anticancer effects than the He APPJ. The findings also serve as a reference for improving the He APPJ for biomedical applications. [ABSTRACT FROM AUTHOR]

This paper presents thorough computational and theoretical analyses of steady forced convective flow over a rotating disc submerged in a water-based nanofluid containing microorganisms. It delves into the examination of boundary layer flow characteristics of a viscous nanofluid, considering Stefan blowing effects and multiple slip conditions influenced by a magnetic field. Notably, the study accounts for novel aspects such as thermal radiation and both constructive and destructive chemical reactions. The movement of nanoparticles is elucidated based on thermophoresis and microscopic behaviors, while changes in volume fraction do not affect the thermo-physical properties of the nanofluid. To address the altered nonlinear set of differential equations, an effective numerical approach, the Keller-Box method, is implemented for critical and efficient solutions. These appropriate transformations are defined and applied. When compared to blowing suction, it shows a better enhancement in the rate of heat transfer, mass, and microorganisms. Some of the main observations are there is a decrease in wall skin friction in the directions of radial and tangential as magnetic field strength is increased. The evaluation of thermal boundary layer thickness and temperature is noted for the radiation parameter (Rd) improvement. The present analysis has applications in electromagnetic micro-pumps and nanomechanics. As to the applications in the science and engineering fields, technologies such as micro-electromechanical systems-based microfluidic devices and microfluidic-related technologies will be accepted. [ABSTRACT FROM AUTHOR]

The constant evolution of computer-aided engineering techniques continues to enhance our understanding of the liquid metal cooling process. Conventional methodologies often rely on fixed heat exchange coefficients for computing the thermal interaction between casting modules and the liquid coolant. This paper introduces a novel coupled numerical scheme integrating computational fluid dynamics (CFD) and solidification analysis. Within this framework, the commercial software ANSYS Fluent® addresses the CFD aspect of the coolant, while the ProCAST® handles the solidification simulation. The solidification process is simulated through solving heat conduction equation in which the heat flux boundary condition on the external surface of the cast module is determined according to the convective coolant flow. The CFD simulation based on the Navier–Stokes equations furnishes the heat flux at the module-coolant interface, taking the temperature field of the cast module as input. The coupled method is validated first with a test case in which a module is immersed inside coolant, followed by a multiphase flow simulation, wherein a casting module is pulled into the liquid tin bath from a gas-phase position. Both simulations reveal temperature variations in the coolant. Comparison with conventional heat exchange coefficient approaches confirms the influence of these variations on cooling curves. The coupled model is further used to investigate the effect of withdrawal rates on the solidification process, exhibiting qualitative agreement with experiments. [ABSTRACT FROM AUTHOR]

This work investigates the effect of a number of perforated fin configurations on the convective flow characteristics within a heated trapezoidal channel. By improving the flow characteristics, pressure distribution, velocity profiles, and temperature patterns, it is intended to investigate optimum performance by using different geometrical fin designs. Numerical simulations are performed for solid and perforated fins with Reynolds numbers from 100 000 up to 200 000. Most importantly, the results highlight that perforations cause significant changes in flow behavior, such as the formation of distinct recirculation zones and dynamic pressure profile variations, which influence the thermal characteristics. This study identifies that optimization of perforated fin geometries is a key strategy to achieve high efficiency in thermal management systems for effective cooling of engineering applications. [ABSTRACT FROM AUTHOR]

This paper examines the formation and characteristics of Rayleigh–Bénard convection in ethanol–water mixtures in a rectangular container with a large aspect ratio of 100. Using a high-accuracy numerical method, the governing hydrodynamic equations were solved, revealing three distinct convective states: double localized traveling waves (DLTWs), source defect undulation (SDU), and spatiotemporal grain boundary (SGB). The formation processes, influencing factors, and flow characteristics of these states are explored, along with the effects of varying Rayleigh numbers on the transitions between them. For DLTWs, we identify a logarithmic relationship between the rate of change in the convective region and the Rayleigh number. Stability at the wavefront is maintained as the concentration waveform leads the temperature waveform. In the case of SDU, the generation of defect undulations is linked to the group velocity of traveling waves. As the Rayleigh number increases, SDU transitions to SGB, while a decrease leads to a transition to traveling waves. For SGB, the flow characteristics are determined by the intensity of the rolls and the speed at which boundary rolls form. In states with unfixed defect positions, these defects migrate either toward the center of the container or toward the sidewalls at varying speeds over time. [ABSTRACT FROM AUTHOR]

This research examines the appearance of a two‐dimensional steady flow movement of a viscous, incompressible fluid undergoing chemical reactions along an infinitely long vertical porous plate. The flow is influenced by a transverse magnetic field, with the plate experiencing a uniform suction velocity. The research novelty lies in inspecting the impacts of ohmic dissipation and diffusion‐thermo effects while maintaining constant heat and mass flux and considering heat and mass transfer in the presence of thermal radiation. Using perturbation techniques, the foremost calculations are solved, and the results are presented both graphically and in tables. The analysis shows that higher values of the diffusion‐thermo parameter upsurge fluid velocity and temperature, whereas the presence of the transverse magnetic field decreases fluid velocity and temperature. [ABSTRACT FROM AUTHOR]

This study implements the comparative study of Casson and Williamson nanofluids by considering the impacts of linear thermal radiation and inclined magnetohydrodynamics. Here, we employ graphs to compare the variables affecting the behavior of non‐Newtonian and Newtonian fluids for a range of physical and dimensionless parameter values. The flow's coupled equations, which contain multiple independent variables, these equations can then be changed into a single independent variable by adding similarity variables and can be solved by applying the shooting method. The effects of thermomigration and Brownian motion on nonlinear flow equations are graphically examined. For an array of radiation parameter values, we have observed that the Newtonian fluid's concentration is lesser than that of both the non‐Newtonian fluids and also noticed that Newtonian fluids converge a little sooner than Casson and Williamson fluids. The primary innovation is shown in Table 1, where the mass transfer and heat transfer values are contrasted with the limiting circumstances of previous research findings that are documented in the literature. [ABSTRACT FROM AUTHOR]

The present investigation focuses on examining the thermophysical characteristics of flow in a gap between rotating cone and circular discs utilizing hybrid nanofluids, owing to its varied applications. The enhanced thermal conductivity of nanofluids proves particularly valuable in cooling systems, diminishing energy consumption, preventing overheating, and enhancing the overall performance of electronic devices, among other benefits. The convectional flow of conductive fluid under the influence of magnetic field and thermal radiation significantly influences the flow dynamics. Moreover, the consideration of dissipative heat, including the combined effects of viscous and Joule dissipation, amplifies the flow properties. The complex nonlinear system of equations, initially presented in dimensional form, undergo transformation into a nonlinear ordinary system in non-dimensional form through the introduction of appropriate similarity rules. Various profiles are then generated using bvp4c built-in function supported in MATLAB and depicted graphically. To optimize the responsiveness of Nusselt number with respect to various factors, a robust statistical approach known as response surface methodology is employed. Statistical validation is carried out using analysis of variance through hypothetical testing. [ABSTRACT FROM AUTHOR]

The study of hybrid nanofluids is significant in thermal management applications by optimizing heat transfer through pioneering materials, mainly the flow of sodium alginate-based hybrid nanofluids. This work addresses the demand for effective cooling solutions in a variety of industrial processes and uses the unique characteristics of non-Newtonian fluids and their inferences for rheological modeling and heat transform enhancement. Inspired by the progressive properties of the non-Newtonian Casson fluid and its applied significance in the rheological modeling and heat transfer characteristics of different dynamic fluids, there is limited knowledge of their response in the mixed convective flow, particularly when influenced by factors like thermal radiation, joule heating, and thermal relaxation time. The present study aims to investigate the heat transfer enhancement of the mixed convective flow of a sodium alginate-based hybrid nanofluid on an extending sheet concentrating on the interaction of different physical parameters that affect thermal performance. The physical phenomena are modeled in a nonlinear partial differential equation, which is then converted into ordinary differential equations with the help of suitable similarity variables. Tables and figures are constructed to show the behavior of the physical parameters involved in the momentum and temperature equations. Premilinary assumptions applied to the flow are electrically conducting, rotating, dissipative, and thermal boundary conditions. A semi-analytical approach homotopy analysis method is employed to obtain the solution of the problem. The outcome witnessed that the velocity profiles show a diminishing behavior through a magnetic parameter; however, the temperature profile shows an escalating behavior. Similarly, the thermal plot intensifies with the Eckert number and thermal radiation. In addition, the numerical data from the tables portrayed that the skin friction decreases with the Casson parameter and the rotation parameter; however, an improvement behavior is noticed in the Nusselt number through thermal radiation and thermal Biot number. From the numerical data, it is concluded that the hybrid nanofluid has superior heat transfer characteristics compared to nanofluid. The finding of this result has also been compared with available results in the literature through a comparative study. [ABSTRACT FROM AUTHOR]

Convective Polymerase Chain Reaction (cPCR), owing to its enhanced thermal cycling efficiency, holds promise for application in the next generation of mainstream commercial PCR instruments. Despite its potential, existing capillary-based and annular reaction chamber designs encounter limitations in precisely controlling the internal flow field, which poses a significant barrier to the progression of cPCR. To overcome these obstacles, this work innovatively proposes a cPCR chip utilizing a "racetrack-shaped" reaction chamber, along with a reverse design approach tailored to meet diverse reaction requirements. Through modeling and simulation, we accurately obtained the relationship between the design parameters and the average flow velocity of the cPCR chip with a "racetrack-shaped" reaction chamber. By capturing the motion of fluorescent particles using a high-speed camera, we acquired the velocity distribution of the actual flow field. Further, we utilized these relationships to conduct a reverse design. Ultimately, a reaction chamber was designed based on the actual amplification needs of 2019-nCoV and hepatitis B virus, and successful amplification was achieved using a self-developed temperature control platform. [ABSTRACT FROM AUTHOR]

The aim of this work is to present a natural convective and squeezing flow model of two-dimensional couple stress nanofluid which is flowing on the sensory surface with variable fluid viscosity. The fluid flowing on a microcantilever sensory surface and squeezing is happening at free stream. The sensor is also useful to detect the movement of fluid and the variations in thermal and solutal rates. The Cattaneo–Christov model is adopted along with nanoparticle and chemical reaction to explore the transmission of heat and mass rates. The analysis of heat transmission in non-Newtonian couple stress fluid flowing on squeezed sensory surface by using the Cattaneo–Christov heat conduction model has various industrial and scientific applications including the polymer processing, wastewater treatment, chemical reactors, biomedical flows, cooling and heating processes in industries, heat exchangers, microfluidics, oil and gas industries. All the assumptions are applied in the basic governing laws laws and then we get the model of the partial differential equations. The governing model of equations is transmuted into ordinary differential equations form via the transformations and then the numerical results of these ODE's are examined with a well-defined numerical technique "Shooting Method". For higher inputs of couple stress, squeezing index and permeability velocity, the fluid's internal velocity decreases. Because of the Prandtl number and thermal relaxation coefficient, the heat transfer mechanism slows down. Mass transfer increases for greater inputs of the thermal diffusivity coefficient and decreases due to concentration relaxation. Further, the numerical dependency of emerging parameters on the skin friction is illustrated in tabular form. The parametric effects on the model (velocity, temperature and concentration) are introduced using numerical values shown in the table. [ABSTRACT FROM AUTHOR]

Purpose: A key step in the propagation of microparticles across temperature gradients, thermophoresis deposition of particles is important for electrical and aerosol technologies. Thus, the impact of thermophoresis deposition of particles is encountered in a mixed convective flow of Williamson hybrid nanofluids (HNFs) across a stretching/shrinking sheet to monitor the fluctuation of mass deposition. Design/methodology/approach: The transformation is used to transmute the PDEs into ODEs and then the bvp4c approach is applied to solve the modified governing equations of the problem. Graphs are used to illustrate the key variables that influence the heat, mass and flow profiles. Findings: The results suggest that the mass transfer rate (MTR) decreases for both solutions due to the higher consequences of the thermophoretic parameter. In addition, the developed impact of the radiation parameter and the posited hybrid nanoparticles markedly raise the heat transfer rate (HTR) for both solutions. Hybrid nanoparticles are effective for generating maximum energy. They play a crucial role in providing a high rate of acceleration in the flow. Practical implications: The stable outcomes of this examination could be very helpful in improving the energy efficiency of thermal systems. Originality/value: The double-diffusive non-Newtonian Williamson fluid by incorporating nanofluids across a vertical stretching/shrinking sheet with thermal radiation has not been considered yet. The obtained numerical results have been validated with the published work to validate the numerical method. In the current study, we have added two different nanoparticles such as clay and TiO2 into the base fluid (water) to form a requisite posited hybrid nanofluid. It was found that the influences of the posited hybrid nanofluid increase the heat transfer characteristics. In addition, the hybrid nanofluids are effective for generating maximum energy. Therefore, these outcomes are very useful in improving the energy efficiency of thermal systems. Figures (a) and (b) represent the physical flow configuration of the hybrid nanofluid model along with the Cartesian coordinate system. Graph (a) illustrates the case for the stretching sheet where the fluid flows away from the origin "O" while the case of the shrinking sheet is highlighted in graph (b). Meanwhile, in this case, the fluid flows basically towards or center of the origin "O" The small solid black and red balls denote the clay and titanium dioxide nanoparticles, respectively. [ABSTRACT FROM AUTHOR]

This research article investigates the bioconvective flow of a second‐grade fluid along a curved surface, considering non‐Newtonian behavior and diverse influencing factors such as heat generation, chemical reactions, slip, Lorentz force, and viscous dissipation. By employing MATLAB's bvp4c tool and the similarity transformations, the nondimensional partial differential equations are solved. We discover that the stable and unstable solutions differ significantly from one another, which has significant consequences for industries including microfluidic devices and curved surface manufacturing. The study also examines the effects of homogenous and heterogenous reaction parameters on reactant concentrations, revealing that higher values reduce concentration, particularly for the second solution. Designing effective heat exchangers and chemical reactors requires consideration of the sensitivity of skin friction coefficient and Nusselt number to curvature, slip, and heat generation, as demonstrated by this work. The findings may guide future experimental study and yield important insights for optimization of bioconvective systems. [ABSTRACT FROM AUTHOR]

The article "Unsteady motion of nearly spherical particles in viscous fluids: a second-order asymptotic theory" in the Journal of Fluid Mechanics examines the motion of nearly spherical particles in viscous fluids. The study develops an explicit asymptotic theory to second order in particle non-sphericity, providing analytical formulae for forces and torques on particles of various shapes. The research highlights the importance of higher-order effects in understanding the complex fluid dynamics of nearly spherical particles and their interactions with the surrounding fluid. The study also includes insights into viscoelastic flows, single molecule biophysics, microswimmers, ultrasonic measurements, and the behavior of SARS-CoV-2 particles. [Extracted from the article]

The use of nanoparticles in heat transmission is an interesting research subject and many scholars have shown an interest in this topic. In accordance with the motivating relevance of nanomaterials, the current research advocates for an evaluation of Casson nanofluid using porous medium thermal analysis in conjunction with vibrant implementations of mixed convection through a chemical reaction. Additionally, a nonlinear suction/injection phenomenon is taken into consideration. A consistent flow pattern is created by the stretched porous structure. The extended Casson nanofluid model is used to identify the heat production of non-Newtonian fluids. The essential incentives for choosing the Casson nanofluid model are validated as it simultaneously achieves Casson fluid, nanofluid and porous medium outcomes. The convective transport of nanofluid has been addressed using convective temperature boundary conditions and convective flow. A dimensionless form with similarity variables is used to simplify the fundamental equations for the provided flow model. The fourth-order Runge–Kutta (RK) strategy is deployed to arrive at a numerical solution for simulated flow. The physical conveyance of flow variables is accessed visually. It is calculated from engineering quantities (i.e., skin friction, Nusselt number and Sherwood number) to generate the numerical values. The velocity declines with increasing porosity and material factors while opposite outcomes are witnessed for buoyancy factors (mixed convection and buoyancy ratio) and injection factor. [ABSTRACT FROM AUTHOR]

Owing to the practical importance of nanofluids and their adjustable thermal capabilities, this study intends to develop a robust generalized differential quadrature local linearization (GDQLL) algorithm for examining realistically the heat and mass aspects of electrically conducting nanofluids during their non-Darcian laminar motion nearby a convectively heating vertical surface of an active electromagnetic actuator (i.e., Riga plate). By invoking Wakif–Buongiorno model and Oberbeck–Boussinesq approximations along with other generalized transport laws (i.e., Cattaneo–Christov and non-Fick's laws) and Grinberg's concept, a set of gigantic partial differential equations is stated appropriately in the sense of the boundary layer approximations for describing exhaustively the present EMHD mixed convective nonhomogeneous flow under the passive control strategy of nanoparticles within the nanofluidic medium. Operationally, the dimensionless differential forms of the governing boundary equations are derived properly by introducing reasonable mathematical adjustments into the preliminary formulation. In this case, the differential complexity of the leading differential structure is reduced to a nonlinear coupled system of ordinary differential equations, whose discrete numerical solutions are computed perfectly via a well-structured GDQLL algorithm. As foremost outcomes, it is demonstrated that the nanofluid motion and its surface thermal enhancement rate can be reinforced significantly through the thermal strengthening in the convective heating and mixed convective process as well as via the electromagnetic improvement in the driven aspect of Lorentz's forces. [ABSTRACT FROM AUTHOR]

The Earth's inner core (IC) is known to exhibit heterogeneous structures with their origins still unknown. From the onset of nucleation, the IC can grow via sedimentation and compaction of iron crystals freezing out from the fluid outer core. Previous studies of IC growth have shown entrapment of fluid within the solid matrix, and unstable density profiles in 1D can appear depending on the efficiency of fluid percolation. In this study, we perform simulations of IC growth in spherical geometries (assuming axisymmetry). We find that it is possible for the IC to develop large‐scale convective flows under certain conditions and, in some instances, produce small‐scale heterogeneites close to the IC boundary. Assuming representative values for the physical properties of the Earth's IC, we show that it is possible for the IC to exhibit compaction‐driven convection today. Plain Language Summary: The Earth's inner core is a solid body composed primarily of an iron‐nickel alloy, formed from crystallization of the fluid outer core over time. Seismologists studying its structure have found some peculiarities such as elastic properties that depend on direction, but figuring out the cause of these peculiarities have been challenging. One theory is the presence of fluids trapped within the solid body of the inner core during its growth, giving rise to its anomalous structure and seismic velocities. In this study, we model the growth of the inner core in 3D spherical geometry (assuming cylindrical symmetry) to investigate the distribution of fluids in the interior. We observe that under certain conditions, instabilities can develop across different scales in the interior which redistribute the fluids within. Taking certain representative values of the properties of the Earth's core, it is possible that instabilities are present in the inner core today. Key Points: For the first time we simulate inner core growth via compaction and melt migration in spherical geometry (assuming axisymmetry)The inner core can develop convective flows under certain parameter ranges to create internal structural heterogeneitiesAssuming values of relevant physical parameters, the Earth's inner core can be expected to exhibit compaction‐driven convection today [ABSTRACT FROM AUTHOR]

This study is focused on the development of mathematical models and software on their basis to simulate complex processes of structural-phase transformations. A mathematical description of the enthalpy-porosity model was developed in this work. Equations of viscous fluid are used to describe the hydrodynamics in time and space. Analysis of necessary model restrictions and assumptions related to the Newtonian fluid model and laminar flows is performed. The computational problem is formulated in terms of the finite volume method with discretized computational domain and hydrodynamic equations. The OpenFOAM software, an open integrated platform for numerical simulation of continuum mechanics problems, was used in computations. The simulations of gallium and ice melting are performed and the model is verified for conductive and convective cases. It is shown that material melting occurs uniformly along the heat sources when dealing with the conductive case while different velocities of convective flows have a significant influence in the melting boundary formation. [ABSTRACT FROM AUTHOR]

A 2-D steady-state laminar natural convective flow due to buoyancy force around a concentric adiabatic cylinder placed inside a porous trapezoidal enclosure was analyzed numerically. The slanted solid boundaries of the trapezium were subjected to a fixed cold temperature (Tc), while the base of the model experienced a hot fixed temperature (Th) and its upper wall was insulated thermally. The relevant dimensionless transport equations were solved using the COMSOL Multiphysics 5.6. Computations were performed for P r = 0.71 - 1000 , D a = 1 0 - 5 - 1 0 - 2 , R a = 1 0 2 - 1 0 6 , and cylinder aspect ratio, A R = 1.0 - 4.0 . Isothermal and stream function plots were used to present the temperature and velocity profiles in the domain. Local and average values of the Nusselt number were used to assess the heat transfer rates from the base wall of the model. Furthermore, the vertical mid-plane velocity in the enclosure was also assessed. The analysis shows that the range of Darcy and Rayleigh numbers investigated resulted in heat transport enhancement. Furthermore, the average Nusselt number was enhanced for 1 0 - 3 ≤ D a ≤ 1 0 - 2 and 0.7 ≤ P r ≤ 100 . However, for P r > 100 , heat transfer became independent of the nature of the working fluid used and for this range of Darcy number, cylinder size increase yielded heat transfer benefits for R a = 1 0 6 . This research finds applications in drying technology, nuclear reactors, and the design of aero and automotive engines. [ABSTRACT FROM AUTHOR]

ABSTRACT The influence of a helicopter gearbox lubricant on Mode I or Mode II fatigue crack growth in 16NCD13 steel was characterized through tests performed on single‐edge notched tensile samples loaded in tension–compression and on cruciform samples submitted to reversed shear plus static biaxial compression, respectively. In Mode I, the lubricant reduced the growth rate at low ΔKI and increased the threshold ΔK$$ \varDelta K $$, while in Mode II, it accelerated crack growth at low ΔKIIeffective, which was not only due to a reduction in crack face friction. The upward convective flow of lubricant carrying debris exuding from the crack, a modification in oil aspect and properties, and chemical analyses near the crack front suggest that a temperature‐induced degradation of the lubricant leads to a corrosive attack of the metal, which accelerates crack growth. A tribologically transformed structure is observed along the lips of cracks grown in Mode II with normal compression in oil. [ABSTRACT FROM AUTHOR]

The text discusses the results of three-dimensional Direct Numerical Simulations (DNS) for spherical shell thermal convection, focusing on kinetic energy dissipation rates and asymmetry in the velocity field. The study reveals scaling behavior in thermal and kinetic energy dissipation rates and highlights the need for further research on heat transport regimes and scaling behavior in different gravity profiles and Prandtl numbers. Additionally, the document provides a list of academic articles on topics related to thermal convection, geodynamo modeling, and planetary convection, which may be relevant for researchers in fluid dynamics, geophysics, and planetary science. [Extracted from the article]

The article delves into the dynamics of natural convection in a vertical channel, specifically examining the formation of convection rolls and the emergence of different flow patterns. Through numerical simulations and bifurcation theory, the study explores the competition between three and four co-rotating rolls, leading to various bifurcation scenarios and transitions between steady, periodic, and chaotic dynamics. The research sheds light on the stability properties of fixed points and periodic orbits in the system, as well as the influence of Rayleigh numbers on the stability of flow patterns. The study contributes to a deeper understanding of complex convective flows and acknowledges the support of previous researchers and funding sources. [Extracted from the article]

The article "Quasi-steady transitions in confined convection" delves into the impact of geometrical confinement on thermal convection through experiments and simulations. It identifies five convective regimes under strong confinement, showcasing unique spatiotemporal signatures with less dependence on certain parameters. The research enhances understanding of thermal convection in tight spaces, with implications for Earth science and thermal engineering. The study explores transitions from quasi-2D to 3D flow structures, highlighting the emergence of oscillatory corner rolls and the influence of sidewalls on heat transport. The findings contribute to knowledge of convective regime transitions in highly viscous fluids and their practical applications. [Extracted from the article]

The article "Laboratory study of the breaking and energy distribution of internal solitary waves over a ridge" in the Journal of Fluid Mechanics examines the interaction of internal solitary waves with Gaussian ridges in laboratory experiments. It categorizes wave-ridge interactions into different types based on parameters like the blockage parameter and incident wave amplitude, and analyzes energy dissipation during wave breaking. The research provides valuable insights into the dynamics of internal solitary waves over ridges, offering implications for ocean mixing and energy budgets. The document is part of a broader collection of research articles on internal waves in oceans, contributed by researchers from various institutions, exploring topics such as wave evolution, instability, and polarity conversion. [Extracted from the article]

The article in the Journal of Fluid Mechanics examines how aspect ratio affects turbulent Rayleigh–Bénard convection. Using numerical simulations, the study analyzes heat transfer and flow structures in cylindrical and periodic domains across different aspect ratios. The findings show that heat transfer initially increases with aspect ratio, peaks, and then stabilizes around Γ ≈ 4. The research also discusses the impact of confinement effects on temperature and velocity variance distributions in cylindrical domains, highlighting the convergence of flow properties at larger aspect ratios. The study concludes that for aspect ratios above 0.75, heat transfer is similar in both periodic and cylindrical domains, with significant variations in boundary layer thicknesses observed. [Extracted from the article]

The article "Energetics of particle-size segregation" in the Journal of Fluid Mechanics presents a continuum framework for analyzing particle-size segregation in granular flows, focusing on shear-driven granular systems. The study identifies distinct phases in the energetics of granular flows and offers a theoretical expression for the degree of mixing or segregation, with implications for engineering and geophysical applications. Numerical simulations explore energy partition, mechanical energy budget, and mixing dynamics, revealing insights into controlling segregation-mixing states in granular flows. The research provides a valuable tool for predicting and managing bulk segregation-mixing states based on known system parameters. [Extracted from the article]

A ground temperature survey has been carried out at three thermal fields of the southern group of the Kambalny volcanic ridge (South Kambalny Near, Central, and Far thermal fields). Their current state is described. Temperature anomalies are based on geological structure features of each thermal field. Temperature survey maps obtained in 2021 and 1965 are compared. Changes in the convective heat flow unloading conditions in the geological structure of thermal fields are considered. Temperature fields on all geological structures of the southern group of the Kambalny volcanic ridge have considerably increased in size over time. An area of the most heated thermal anomaly sites has become larger. Maximum ground temperatures increased by 10°С, on average. Some thermal anomalies (boiling and pulsating water pools and steam–gas jets) increased their flow rates and/or temperature. New heated areas were discovered within the thermal anomalies. [ABSTRACT FROM AUTHOR]

This work presents the morphology of the melt products of alumina-magnesia spinel (MgAl2O4), obtained in a thermal plasma environment. The energy of the thermal plasma was realized through an electric arc plasma torch with a power of 12 kW, where the plasma is considered an effective medium for heating and melting refractory materials. The initial materials for producing MgAl2O4 spinel were: pure magnesium oxide MgO and aluminum oxide Al2O3; natural materials: the source of Al2O3—boehmite from bauxite deposits, Northern Urals, and the source of MgO—magnesite from the Khalilov and Savinsky deposits. It was established that, regardless of the nature of the materials, the crystallized melt products have a bulk density of 3.84 g/cm3, and the weight loss varies from 2 to 6 wt %. The morphology of the obtained spinel is represented by well-defined crystals arranged over an area of ~1.75 μm2, forming a textured surface with varying tilt angles. It is noteworthy that the morphology formation occurs in two interconnected stages: primary—surface crystallization of crystals with a diameter of 85 μm and a half-width into the matrix body h of 100 μm; secondary—localized crystallization of crystals with a diameter of 10 μm, randomly distributed throughout the matrix of the melt product. This is achieved through the development of convective flows from the surface into the melt droplet during intense heat exchange when the electric arc plasma torch is turned off. [ABSTRACT FROM AUTHOR]

We consider the optimal control of unsteady natural convective flow of reactive viscous fluid with heat transfer. It is assumed that Newton's law governs the heat transfer within an exothermic reaction under Arrhenius kinetics and Navier slip condition on the lower surface of the channel. The flow is examined in a vertical channel formed by two infinite vertical parallel plates, with a distance (H) between them. Time-dependent natural convective slip flow of reactive viscous fluid and heat transfer equations are solved in a unit interval using the Galerkin-Finite Element Method (FEM) with quadratic finite elements in space and the implicit Euler method in time. The direct solutions are obtained for testing various values of the problem parameters: the Biot number, the Frank Kamenetskii parameter, the Navier slip parameter, and the computation of the skin friction and the Nusselt number (Nu). The optimal control problem is designed for the momentum and energy equations to derive the fluid-prescribed velocity and temperature profiles by defining controls on the boundary of the domain in two ways: (a) controls are formulated as parameters in the boundary conditions, such as slip length and Biot number; (b) controls are assigned as time-dependent functions in the boundary conditions, representing the slip velocity and the heat transfer rate. Following a discretize-then-optimize approach to the control problem, optimization is performed by the SLSQP (Sequential Least Squares Programming) algorithm, a subroutine of SciPy. Numerically simulated results show that the proposed approach successfully drives the flow to prescribed velocity and temperature profiles. [ABSTRACT FROM AUTHOR]

The mathematical modeling of blood flow with the incorporation of ternary hybrid nanoparticles (i.e., titania, silica, and alumina nanoparticles) is the focus of this work. The flow of blood is simulated using the Casson fluid model. The impacts of ternary hybrid nanoparticles, shape factor, and Geometry of solid nanoparticles are visualized and investigated. The momentum and thermal characteristics of a flowing liquid are determined by considering magnetization, porosity, and nonlinearized radiating thermal flux. The basic partial differential equations resulting from mathematical modeling are turned into non‐linear ordinary differential equations using suitable velocity transforms. The derived nonlinear equations are then numerically calculated using the 4th‐5th order Runge‐Kutta‐Fehlberg method with the shooting technique and analytically solved by the Adomian decomposition method (ADM). The effects of the factors involved on the dimensionless profiles produced are fully addressed. It is found that the Skin friction factor and heat transfer rate in the radial direction upsurge with the augment of both rotation parameter and nanoparticles volume fraction; however, the Skin friction factor drops in the azimuthal direction. Also, results obtained reveal an enhancement in the local Nusselt number with the upsurge in the magnitude of radiation parameter, Rd, solid nanoparticles concentration, φ$\ \varphi $, shape factor value, s, and disk temperature, θf${{\theta }_f}$. For validation, the outcomes of this inquiry were compared to the outcomes of the HAM‐based Mathematica software. In addition, the acquired analytical DRA data are compared to numerical RKF45 values and those given in the literature. [ABSTRACT FROM AUTHOR]

Blood and other non‐Newtonian fluids are most appropriately described by a rheological model known as a Casson fluid. The presence of yield stress in Casson fluids makes them particularly relevant in the fields of biomechanics and polymer industries. In this analysis, a numerical simulation of flow of a Casson nanofluid over a stretching surface was estimated. The flow of fluid was subjected to a magnetic field of varying strength. The governing partial differential equations for momentum and heat transmission are converted into a set of nonlinear ordinary differential equations with the aid of similarity transformations. After that, numerical techniques are used to solve the equations. Figures and tables are utilized to illustrate how non‐dimensional parameters affect energy, concentration, and velocity trends. [ABSTRACT FROM AUTHOR]

Enhancement of "heat transfer" using "nanofluid" has diverse potential applications in heat exchangers, thermal management of electric devices, cooling of tractors, solar thermal systems, manufacturing of paper, and many others. Hence, the aim of the current investigation is to explore the impacts of "mixed convection" on "nanofluid flow" over a permeable rotating disk, which is stretched radially in a porous medium. Variable wall "temperature" and "convective boundary conditions" are also considered here. This makes the present investigation different from others. The suitable "similarity transformations" are imposed to alter the governing partial differential equations into a set of coupled ordinary differential equations (ODEs). Then, these ODEs are solved numerically by the "4th order Runge‐Kutta method" using the "shooting technique" with the help of the bvp4c package in MATLAB software. The effects of fluid controlling "parameters" on "flow and thermal fields" as well as "skin friction coefficient" and "Nusselt number" are presented graphically and explained physically. Due to enhanced rotation of the disk, the radial and azimuthal velocity of the fluid increase and the temperature of the fluid decreases. Most importantly, it is observed that when the disk rotates faster than the stretching rate, the temperature of the nanofluid decreases rapidly, which has wider applications for cooling purposes. It is also noted that when the suction parameter increases its value from −1 to 1, for Ag–water nanofluid, the "skin friction coefficient" decreases by 73.56%, and the Nusselt number also decreases by 24.11%, and for Fe3O4–water nanofluids, the "skin friction coefficient" decreases by 71.25% and the Nusselt number decreases by 24.47%. [ABSTRACT FROM AUTHOR]

This work provides an analytical and numerical assessment, complete with correlations, of mixed convection in a double lid‐driven shallow rectangular enclosure, which confines non‐Newtonian fluids of the Ostwald–de Waele type and which a uniform thermal flux heats. The finite volume method with the SIMPLER algorithm is the numerical method used to solve the governing partial differential equations along with the boundary conditions, where the parallel flow concept is the analytical approach. In the limits of the explored values of the governing parameters of this study, which are the Rayleigh number, the Peclet number, and the behavior index, the results obtained by these approaches appear to be in good harmony. On the basis of the results obtained by these approaches, we established helpful correlating relations between the governing parameters to realize the contribution of mixed convection to heat transfer. This leads to the finding that the ratio Ra/Pe2+n is the mixed convection parameter, which is the key to distinguishing the three convective flow modes. On the basis of this parameter, which allows the transition from one regime to another, it is possible to identify the zones that designate the predominance of natural, forced, and mixed convection. The limits of these latter depend on the behavior index, n, which is diversified from 0.6 to 1.4 to account for shear thinning (0 < n < 1, low apparent viscosity, high fluid flow, and high heat transfer rate), Newtonian (n = 1), and shear thickening (n > 1, high apparent viscosity, slow fluid flow, and low heat transfer rate) fluids. On the other hand, the study presents and interprets the influences of the steering factors on heat transfer and fluid flow. [ABSTRACT FROM AUTHOR]

The current investigation focuses on the magneto-nanofluid mixed convective boundary-layer flow of nanofluid caused by a vertical permeable plate with nonlinear thermal radiation. Furthermore, heat and mass transfer for water-base fluids influenced by heat generation/absorption and viscous dissipation have been analyzed. The convective boundary condition is also imposed on the vertical sheet. The main aim of the study is to investigate the five different types of nanoparticles, namely, silver $ ({\hbox{Ag}}) $ (Ag) , copper $ ({\hbox{Cu}}) $ (Cu) , alumina $ ({\hbox{A}{\hbox{l}_{\rm 2}}{\hbox{O}_{\rm 3}}})\hbox{,} $ (A l 2 O 3 ) , copper oxide $ ({\hbox{CuO}}) $ (CuO) , and titanium dioxide $ ({\hbox{Ti}{\hbox{O}_{\rm 2}}}) $ (Ti O 2 ) in the base fluid water. Moreover, the governing partial differential equations are converted into a set of ordinary differential equations via Sparrow–Quack–Boerner local nonsimilarity method. Additionally, nonlinear ODEs are successfully tackled by the Runge–Kutta–Fehlberg method. Physical parameters are examined graphically along with the velocity, temperature, and concentration distribution. Further, the skin friction coefficient, local Nusselt number, and Sherwood numbers are also studied in detail using graphs. The results show that increasing the value of buoyancy parameter and magnetic parameter fluid exhibits more resistance in the fluid, thereby fluid velocity and momentum boundary layer reduce. Moreover, the radiation parameter transmitted more heat from the surface to the fluid; as a result, the fluid temperature is boosted. [ABSTRACT FROM AUTHOR]

Today's world witnesses an unprecedented augmentation in energy consumption which has tipped the balance of attention toward the renewable energies, especially solar energy as the most promising type. With recent developments in the field of solar heating units, evacuated tube solar units have played a prominent role in solar energy absorption process in recent years due to the existence of a vacuum envelope in the structure of the tubes. Following this, a three-dimensional transient numerical study has been carried out by employing computational fluid dynamics aimed to appraise the water flow, natural circulation process and convective rate inside the evacuated tube along with a storage tank. A comparison has been made using water and CuO/H2O nanomaterial as the operate fluid for the purpose of evaluating the efficacy of nanofluid on the functionality of the system. The results in the form of velocity distribution, temperature and velocity contours served as an array of reasons on serviceability of CuO nanoparticles in the given application. This is evidenced by the natural circulation rate and heat transfer sustaining more desirable magnitudes, while observing an increase in the average temperatures of the tube and tank, respectively. Implementation of CuO/water over plain water has been reasserted categorically and thus justified. [ABSTRACT FROM AUTHOR]

Heat transfer experiment on water flow boiling was carried out in the upward direction under atmospheric pressure through a narrow rectangular channel heated on one-side by vapor having a gap of 2.75 mm, a width of 250 mm, and length of 1400 mm. The heat transfer coefficient and thermal hydraulic thresholds of the flow boiling in forced convective flow, such as the onset of nucleate boiling (ONB) and onset of fully developed nucleate boiling (OFDB) were investigated. The experiment was performed over a wide range of inlet temperature (75–95°C), mass flow rate (2–9 g/m), and heat fluxes (5–16 kW/m2). The effects of the parameters on the heat transfer coefficients have been discussed in detail. A series of ONB, FDB and heat transfer correlations were evaluated using the experimental data, and most of the correlations did not adequately fit the experimental results. A modified Hong et al. correlation and modified Zhu et al. correlation were used to predict the wall superheat at ONB and FDB respectively. The average errors (AEs) of the two correlations were 2.36% and −0.68%, and the root mean square errors (RMSEs) of them were both 14.00%. A modified Li and Wu correlation was used to predict heat transfer coefficients with the average error (AE) of 1.46% and the root mean square errors (RMSE) of 11.88%. [ABSTRACT FROM AUTHOR]

We introduce a hybrid framework to model the fluid dynamics of free convection condensation of saturated steam outside a circular cylinder. The liquid film is modeled analytically, and the adjacent vapor flow field is resolved numerically. The model incorporates temperature-dependent thermophysical properties of the condensate. We explore the subtle role of Jakob number (Ja) and Weber number (We) in the two-phase flow and establish the criteria for dynamic similarity of the flow field with two new dimensionless numbers, viz., free-fall Reynolds number and similarity number. For fixed base Prandtl number of the condensate, the increases in the subcooling rate with Ja and the cylinder's surface area to volume ratio with We cause film thickening. We develop a theoretical correlation to predict the average film thickness (δm). We identify entrainment and bypass zones in the vapor flow field demarcated by a separating streamline. The entrainment zone's streamlines converge to the interface, yielding a net condensate drainage. The bypass streamlines never reach the interface and reduce the condensation efficiency. The results show that the tangential velocity is dominant within the liquid film, the radial velocity is dominant within the vapor flow field, and they are of the same order at the interface. We locate the point of flow separation influenced by a surface tension-induced adverse pressure gradient. The location of the flow separation point shifts upstream, and the separating streamlines become steeper with the increase in We. Our investigation reveals the zone of tangential flow reversal near the interface, promoted with increasing We. [ABSTRACT FROM AUTHOR]

This work aims to investigate the unsteady hydromagnetic free convective flow of a viscous, electrically incompressible fluid influenced by an inclined magnetic field, radiation, and heat source. Specifically, it explores the behavior of water-based nanofluids under these conditions. The Newton-Raphson shooting technique combines the 4th-order Runge-Kutta approach to obtain dimensionless and accurate solutions to the governing equations. The study assesses flow characteristics and heat transfer properties over various parameter values. The outcomes are visualized through graphical representations of velocity, temperature, skin friction coefficient, and the local Nusselt number. The present study examines the impact of copper (Cu), silver (Ag), alumina (Al 2 O 3), and titanium dioxide (TiO 2) nanoparticles in water as the base fluid on the percentage increase in skin friction and Nusselt number under various physical conditions. Suction increases skin friction by 10–15 % and the Nusselt number by a similar margin, whereas injection can reduce these metrics. Radiation enhances heat transfer, resulting in a 5–10 % increase in skin friction and a 10–15 % rise in the Nusselt number, with nanoparticles like Ag showing the most substantial effects due to their superior thermal properties. [ABSTRACT FROM AUTHOR]

The Buongiorno nanofluid model serves as a foundational model for theoretical and experimental research in the field of nanofluids, and this model can be applied to various engineering problems, including heat exchangers, biomedical applications, solar collectors, nuclear reactors, and different cooling systems in the automotive and electronics industries. The use of nanofluids in the Eyring-Powell fluid over a squeezed sensing surfaces is a vital area of research for the design and improvement of microfluidic devices and sensors, which find widespread usage in industrial and medical applications. The main purpose of this work is to note the augmentation in thermal conductivity by using the Buongiorno nanofluid model along with the natural convective flow of non-Newtonian Eyring-Powell fluid that is moving on the squeezed sensory surface along with slip velocity. The viscosity of a fluid is assumed to be dependent on temperature. The Cattaneo-Christov heat and mass flux and chemical reaction are assumed to determine the combined effect of heat and mass transport. The governing model of equations is in the form of dimensional partial differential equations, and we have to convert these equations into ordinary differential equations; therefore, a set of similarity transformations is adopted for making the equations into dimensionless form. The numerical results were obtained by adopting the predictor and corrector multistep method, namely the 'Adams-Bashforth' technique, in Matlab software. The use of natural convective flow enhances the velocity region. The velocity slip parameter increases the velocity of the fluid, whereas the viscosity parameter drops the velocity profile. The thermophoresis and Brownian motion parameters are the sources of the increment in the temperature region. The thermal relaxation and solutal relaxation parameters are the sources of decline in the temperature region. The squeezing parameter is the source of reduction in the skin friction, whereas the result indicates that the fluid parameter, Grashof number, and viscosity coefficients increase the skin friction. [ABSTRACT FROM AUTHOR]