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The 2-D MXene material has garnered immense attention in the multidisciplinary region due to its high surface area, excellent electrical conductivity, good biocompatibility, and tunable physicochemical properties. MXene nanoparticles can be utilized in thermal ablation to destroy unwanted tissues and tumors without invasive surgery. Therefore, this work investigates MXene (Ti3C2) embedded blood flow over a curved shape stretching artery. The mathematical model for hybrid blood flow is developed to see the thermal changes due to external pressure and diffusion. Furthermore, the flow model PDEs are equipped with Darcy-Forchheimer's condition, external magnetic force, thermal radiation, and heat source/sink. These PDEs are converted into a system of ODEs by a proper similarity conversion. The solution of governing equations are acquired numerically, the flow and thermal performance outputs are exhibited through pictorial and tabular representations. It is revealed that the thermal performance is enhanced due to sphere shaped MXene (Ti3C2) nanoparticles. The outcomes of this study can be utilized in photothermic therapy and other applications where heat transfer plays an essential role. [ABSTRACT FROM AUTHOR]

AbstractA numerical investigation is performed to scrutinize the enhanced thermal transmission of Carreau nanoliquid above an incessantly moving thin needle in the occurrence of nonuniform heat rise/fall effects. The arising system of nonlinear coupled equations is exercised numerically by employing a suitable numerical scheme, i.e. bvp5c Matlab solver. The prime motive of this research is to determine the effectual thermal conductivity of the nanoliquid by using Maxwell/Xue models to achieve enhanced energy transmission. The stimulus of pertinent constraints upon the flow factors, viz. velocity and thermal gradients, are illustrated through plots. Also, the wall friction and energy transmission rate are bestowed via plots and tabular values. The outcomes reveal that the Xue nanomodel augments the thermal transmission rate of the nanofluid to a greater extent than the Maxwell nanomodel. This research holds potential for applications in geothermal power production. [ABSTRACT FROM AUTHOR]

In thermal power and manufacturing processes, solar energy utilization has grown extensively. This work investigates the heat diffusion characteristics of an unsteady Oldroyd-B hybrid nano liquid flow across an expanding cylinder. A constant magnetic field is applied in the radial path in the presence of radiant heating, generation, or sinks, and Cattaneo-Christov (CC) heat flow. Hybrid nano liquid composed of two distinct nanoparticles (CoFe 2 O 4 and Fe 3 O 4) embedded in ethylene glycol as the primary fluid. A mathematical model was established and reconstructed into a nonlinear ordinary differential equations (ODEs) system, utilizing the proper likeness conversion. The Matlab inbuilt bvp5c scheme determines the problem's numerical solution. We observed the instabilities in the flow and thermal area and also the local Nusselt number impacted by the pertinent dimensionless characteristics. The findings are addressed graphically and tabularly for several nanoparticle shapes (spherical, brick, and platelet). It has been discovered that spherical shapes are found to have a faster heat conduction rate than brick and platelet nanoparticle shapes for the considered flow case. While unsteadiness parameters tend to increase the temperature field, the augmentation of the temperature relaxation factor reduces the energy profile. • Effective solar energy usage in Parabolic Trough Solar Collectors (PTSC). • Discrete outcomes for spherical, brick, and platelet-shaped nanoparticles. • Spherical-shaped ferro particles showed better heat transfer rates than platelet and brick-shaped particles. • Thermal radiation improves heat transfer in hybrid nano-liquid with platelet-shaped nanoparticles. • The coaxial cylinders can be employed as a central heat pipe for the PTSC's active thermal transport. [ABSTRACT FROM AUTHOR]

The current work deals with heat diffusion in hyperbolic tangent cylindrical film movement in the occurrence of Darcy, buoyancy, magnetic field, radiative heat, and irregular temperature sink/source. A precise model was recognized to inspect the same and solved numerically through the bvp5c MATLAB scheme. The results are explored for Newtonian and non-Newtonian cases to understand the rheological advantage of hyperbolic tangent fluid. The consequences are pondered with the help of pictographic and mathematical assessments. The liquids with tangent hyperbolic rheological conduct oblige for active heat diffusion rate. Therefore, these fluids can be used in Parabolic Trough Solar Collector for further heat transmission rate and operative usage of solar energy. [ABSTRACT FROM AUTHOR]

Solar energy is a leading energy source to reduce greenhouse gas radiation and other types of air pollution. In particular, solar energy is widely used to generate electric power. The rheological behavior of various non-Newtonian liquids plays an active role in heat transferal processes. This study examines the heat conduction in water-based Jeffrey and Maxwell cylindrical film flows suspended with magnetite (Fe3O4) nanoparticles. The radiative heat, uneven heat sink/source, and magnetohydrodynamic effects are considered. A precise model is developed and determined mathematically. The influence of pertinent constraints on flow and thermic profiles is explored using pictorial and numerical outcomes. The drag force generated by magnetohydrodynamics effectively regulates the wall friction and heat transmission rate. The temperature profiles of Maxwell ferrofluid are more active than Jeffrey ferrofluid. The heat diffusion rate of Jeffrey ferrofluid is more progressive than the Maxwell ferroliquid. [ABSTRACT FROM AUTHOR]

A numerical examination is accomplished to explore the thermal transmission in the cylindrical film flow of Casson–Williamson hybrid nano liquids. This work incorporates water as a base fluid embedded with aluminum oxide (Al2O3) and copper oxide (CuO), two forms of solid nanoparticles. A consistent magnetic field is applied along a radial path in the presence of Ohmic heating, thermal radiation and Catteneo–Christov thermal flux to examine Williamson and Casson hybrid nano liquids' flow and heat transmission characteristics. The flow model is developed and resolved numerically using the bvp5c Matlab software. A relative outcome for Casson and Williamson cross nano liquids is obtained and discussed. The current study is on solar energy application to parabolic trough solar collectors. It is found that the heat spread rate of Casson cross nano liquid is more advanced than Williamson hybrid nano liquid. The flow and heat regions can be controlled by the drag force produced by the external magnetic field. [ABSTRACT FROM AUTHOR]

Solar power plays a significant role in fulfilling industrial and household energy needs. A hypothetical analysis is accomplished to scrutinize the practical usage of solar power by enhancing the heat diffusion rate of the conventional liquid. Third-grade cylindrical film flow is considered in the existence of hydrodynamics (MHD), radiation, Ohmic heating, and Cattaneo–Christov heat flux. Water is a base liquid suspended with graphene oxide nanoparticles. An exact model is established and solved computationally by relating suitable comparisons. The considered flow model directly uses parabolic trough solar collector. A comparative analysis is performed on Xue and Maxwell nanomodels, and the results are explored with computational outcomes. It is found that the Xue nanomodel is actively enhancing the third-grade nanofluid temperature while the Maxwell nanomodel appreciates the heat transmission rate of the same. [ABSTRACT FROM AUTHOR]

Theoretical analysis is performed to examine the heat convection in hydromagnetic Sutterby nanofluid flow across a cone in the attendance of Darcy-Forchheimer and modified temperature flux effects. The enhanced heat transmission was investigated using Maxwell and interfacial layer (nanolayer) approaches by considering ethylene glycol (EG) based spherical copper (Cu) nanoparticles. An exact model is developed and verified numerically using the bvp5c MATLAB scheme. Simultaneous outcomes are obtained for Maxwell and nanolayer approaches. Pertinent parameters influence on momentum and energy fields is examined via plots and tables. The nanolayer approach reported higher thermal conductivity than the Maxwell approach. Also, modified heat flux commendably improves the heat diffusion rate of Sutterby nanofluid without affecting the wall resistance. [ABSTRACT FROM AUTHOR]

The problem of an unsteady MHD Casson fluid flow towards a stretching surface with cross diffusion effects is considered. The governing partial differential equations are converted into a set of nonlinear coupled ordinary differential equations with the help of suitable similarity transformations. Further, these equations have been solved numerically by using Runge-Kutta fourth order method along with shooting technique. Finally, we studied the influence of various non-dimensional governing parameters on the flow field through graphs and tables. Results indicate that Dufour and Soret numbers have tendency to enhance the fluid velocity. It is also found that Soret number enhances the heat transfer rate where as an opposite result is observed with Casson parameter. A comparison of the present results with the previous literature is also tabulated to show the accuracy of the results.

The total amount of existing solar energy on earth is more than the World's current and estimated energy requirements. The radiative heat from the sun is capable of producing electricity. This study deals with hydrogen energy storage by growing the heat transmission enactment of PTSC (Parabolic Trough Solar Collector) in the presence of thermic heat, resistive heat, buoyancy, magnetic field, and uneven heat sink/source. The Oldroyd-B and Maxwell fluids are the shear-thinning fluids with rheological differences. This study investigates the best heat transfer performer among these two, which helps to enhance the heat transfer in PTSC. A mathematical model was established and resolved numerically to examine this. The study outcomes are deliberated with the assistance of pictorial and numerical evaluations. Thermal radiation with Oldroyd-B fluid combination helps to enhance the heat transmission rate of PTSC to another level. [ABSTRACT FROM AUTHOR]

Renewable energy is the most prominent energy source due to its industrial and technological needs. A computational examination is performed to explore the result of the nanospray on the film flow of Casson and Sutterby nanofluids over a cylindrical surface. Due to the effective thermal conductivity of graphene oxide, the water–graphene oxide nanofluid is considered in the existence of radiative heat, Catteneo–Christove heat flux, and hydrodynamic effects. A mathematical model is established and resolved numerically by applying appropriate similarities. Simultaneous results are obtained for Sutterby and Casson nano models. The impact of considered physical features on the flow and heat transmission of both liquids is studied with the help of pictorial and mathematical outcomes. The heat transmission rate of the Casson nanoliquid is higher than the Sutterby nanoliquid. Hence, the fluids with Casson rheological nature are helpful in heat transfer applications. Both liquids' flow and heat transport rate can be regulated by adjusting the film thickness. [ABSTRACT FROM AUTHOR]

The conical flow has its significance in the thermal design of high-speed missiles and shock jump conditions. Buoyancy-driven melting heat transfer in hydrodynamic Casson ferroliquid flow over a conical surface is assessed numerically. The buoyancy force, uneven heat sink/source, radiative heat, melting heat, and Ohmic heat are considered physical relevance. The water-based cylindrical-shaped cobalt (Co) nanoparticles are measured. The thermal conductivity of ferrofluid is measured by assessing the Hamilton-Crosser, and interfacial layer approaches. A mathematical model was established and resolved computationally using the Lobatto-IIIA-based Matlab scheme. Simultaneous results are explored and explained with the help of pictorial and mathematical outcomes. The Hamilton-Crosser model reported a higher thermal conductivity than the interfacial layer approach for Casson ferrofluid flow. [ABSTRACT FROM AUTHOR]

The present article focuses on radiative hydromagnetic unallied stagnation point flow past a horizontal extending surface under varying viscosity concerning temperature. To understand the physical behaviour of the physical model, we converted the scheme of nonlinear partial differential equations to ordinary differential equations using suitable similarities. Matlab bvp5c procedure is adopted to obtain the computational outcomes. Also, we graphed the flow and temperature fields with and without the influence of magnetic field for various controlling non-dimensional parameters such as thermal radiation, variable viscosity, Prandtl number, velocity and temperature ratio parameters, etc. Moreover, Nusselt number and wall friction are evaluated and presented in the table for both criteria. It is noticed that the heat transfer rate is high in the presence of a magnetic field when compared to the absence of a magnetic field. Thermal radiation, viscosity variation, and temperature ratio parameters effectively stabilise the axial flow velocity. [ABSTRACT FROM AUTHOR]

Abstract The present study deals with the boundary layer analysis of a 2 D magnetohydrodynamic flow of chemically reacting Casson nanofluid flow over a semi-infinite inclined porous plate. The energy and diffusion equation are encompassed with frictional heating, heat generation/absorption, thermo diffusion and thermal radiation effects. For making the analysis more attractive we pondered two distinct type of nanofluids namely, TiO 2 -water and CuO-water. The transmuted governing PDEs are resolved analytically by employing regular perturbation method. The impact of pertinent flow parameters on momentum, thermal and mass transport behavior including the skin friction factor, thermal and mass transport rate are examined and published with the assistance of graphical and tabular forms. Results describe that thermal radiation and chemical reaction restrictions have a propensity to enhance thermal and mass transport rates, respectively. And also, water based TiO 2 nanofluid possess higher velocity compared with water based CuO nanofluids. [ABSTRACT FROM AUTHOR]

This study reports the enhanced heat transfer of electrically conducting magnetic-nanofluids with thermal radiation and inclined magnetic field effects. We consider water as a base fluid embedded with the two different types of aluminum alloy nanoparticles namely AA 7072 and AA 7075. AA 7072 is a special type of heat treatable aluminum alloy with 98% Al and 1% of Zn with the additives such as Si , Fe and Cu . Similarly, AA 7075 contains 90% Al , 5–6% Zn , 2–3% Mg , 1–2% Cu with the additives such as Si, Fe and Mn . Numerical results are explored with the aid of R-K and Newton’s techniques. Results are depicted diagrammatically and discussed on the common profiles of interest (velocity and temperature). The heat transfer rate of water-AA 7075 nanofluid is significantly high when compared with the rate of heat transfer of water-AA 7072 nanofluid. [ABSTRACT FROM AUTHOR]

In this study we analyzed the momentum and heat transfer characteristics of MHD boundary layer flow over an exponentially stretching surface in porous medium in the presence of radiation, non-uniform heat source/sink, external pressure and suction/injection. Dual solutions are presented for both suction and injection cases. The heat transfer analysis is carried out for both prescribed surface temperature (PST) and prescribed heat flux (PHF) cases. The governing equations of the flow are transformed into system of nonlinear ordinary differential equations by using similarity transformation and solved numerically using bvp4c Matlab package. The impact of various non-dimensional governing parameters on velocity, temperature profiles for both PST and PHF cases, friction factor and rate of heat transfer is discussed and presented with the help of graphs and tables. Results indicate that dual solutions exist only for certain range of suction or injection parameters. It is also observed that the exponential parameter have tendency to increase the heat transfer rate for both PST and PHF cases. [ABSTRACT FROM AUTHOR]

AbstractSolar energy is an essential source of clean, renewable energy that has the potential to transform our energy system and reduce impact on the environment. But, only 3.6% of solar energy is effectively used around the globe for electricity generation. So, using solar energy to the maximum extent is essential to control air pollution and save the environment for future generations. This article discusses the operative use of solar energy and suggests measures for optimal solar energy utilization in electric vehicles (EVs). The water-based silicon dioxide (SiO2) and aluminum oxide (Al2O3) combination is considered due to the high refractive index of SiO2 and scratch resistance and durability of Al2O3. A theoretical model was established by considering the shape of the solar collector, temperature change, nano spray, and radiative heat. The modeled problem was computationally resolved using the bvp5c MATLAB scheme, and simultaneous results were explored for various outlines of solar collectors. It is found that the shape of the solar collector and nanospray/nanocoating play a significant role in the practical usage of solar energy. Using curved-shaped solar collectors with water-SiO2-Al2O3 nanocoating allows the solar collector to absorb more light. This helps to improve the effectiveness of solar collectors in running EVs, which can reduce carbon growth. [ABSTRACT FROM AUTHOR]

Nowadays, the foremost thermal source from the sun is solar energy. The current study deals with the enhanced heat transfer of Parabolic Trough Solar Collector (PTSC) using thermic radiation, space-dependent heat source, and nanotechnological energy. For this, we considered water-based graphene oxide (GO) and alumina alloy (AA7075) mixtures flow through PTSC fitted inside the solar wings of aircraft (Fig. 1). A theoretical Maxwell nano model is adopted by incorporating the thermic radiation and space-dependent heat source/sink effects in the energy equation. The pressure drop caused by the fluid-solid interactions is evaluated by introducing the Darcy-Forchheimer condition. The modeled problem is resolved numerically by applying suitable similarities. The impact of various physical constraints on flow and thermal fields are estimated for water-GO and water-GO-AA7075 fluids and found that water-GO-AA7075 hybrid nanoliquid effectively enhances the thermal performance of PTSC in the presence of thermic heat. Darcy-Forchheimer parameter effectively regulates the momentum and energy fields of hybrid nanoliquid. • Enhanced heat transfer efficiency of Parabolic Through Solar Collector (PTSC). • Usage of solar power for energy storage applications. • The Darcy-Forchheimer condition evaluates pressure drop caused by the fluid-solid interactions. • Water-GO-AA7075 hybrid nanoliquid effectively enhances the thermal performance of PTSC in the presence of thermal radiation. • A nanotechnology application for hydrogen energy storage. [ABSTRACT FROM AUTHOR]