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The article "Viscoelastic flow around a confined cylinder" in the Journal of Fluid Mechanics delves into the stability of viscoelastic fluid flow around a cylinder confined between two plates. It uncovers an asymmetric flow pattern triggered by the interplay of shear-thinning and elasticity, with instability emerging at the rear stagnation point due to large perturbations of tensile stresses. Critical conditions for instability depend exponentially on material properties and linearly on geometry, emphasizing the significance of shear-thinning and elasticity in generating flow instability. The research sheds light on the complex relationship between these factors in viscoelastic flows around confined geometries, offering insights into fluid dynamics with implications for engineering and materials science. [Extracted from the article]

The article in the Journal of Fluid Mechanics explores waves and non-propagating modes in stratified MHD turbulence with a weak mean magnetic field. It analyzes flow dynamics using linear theory and simulations for a Boussinesq fluid with unitary magnetic and thermal Prandtl numbers, identifying various motions based on Froude and Alfvén–Mach numbers. The research delves into energy distribution, cascade processes, and the impact of stratification and mean magnetic fields on kinetic, magnetic, and potential energies. The study reveals insights into the behavior of energy components, decay rates, anisotropy, and wave dynamics in stratified MHD turbulence, offering a comprehensive understanding of complex interactions in such systems. [Extracted from the article]

The article in the Journal of Fluid Mechanics delves into a parametric study and scaling of a supersonic jet manipulated by a minijet, focusing on control parameters like mass flow rate ratio and diameter ratio. The study reveals that the minijet can induce coherent structures in the jet, enhancing mixing, and proposes a scaling law based on the penetration depth of the minijet. Additionally, the document from CRC Press covers various studies on active flow control, shock pattern transformation in supersonic jets, and fluidic flow control effectors for flight control, offering valuable insights into aerospace engineering. [Extracted from the article]

The article published in the Journal of Fluid Mechanics explores the impact of Reynolds number on the turbulence induced by bubbles in a Newtonian fluid at low Reynolds numbers. The study shows that as the Reynolds number decreases, the energy spectra of velocity fluctuations transition from a k − 3 scaling to a k − 5/3 scaling. The research provides experimental evidence supporting the claim that at low Reynolds numbers, the energy spectra of bubble-induced turbulence are non-universal and depend on the number of bubbles present. The study highlights the importance of bubble wakes in determining the energy spectra and turbulence characteristics in bubbly flows. [Extracted from the article]

The article explores concentration fluctuations in passive scalar plumes emitted from small sources in a turbulent boundary layer through large-eddy simulations. It highlights the impact of source size and elevation on concentration fluctuations, with smaller elevated sources initially leading to higher fluctuations. The study also discusses statistical properties like skewness and kurtosis, showing differences between elevated and ground-level sources. The findings contribute to understanding the dispersion of scalar plumes and provide valuable insights into the dynamics of concentration fluctuations in different atmospheric conditions. [Extracted from the article]

The article "Structure and energy transfer in homogeneous turbulence below a free surface" delves into the dynamics of turbulence beneath a free surface, emphasizing energy transport across scales. The research uncovers alterations in energy distribution and velocity gradients near the surface, impacted by surface deformation and boundary conditions. The findings corroborate previous studies and theoretical expectations, shedding light on the influence of the free surface on inter-scale energy transfer and turbulence dynamics. The study offers valuable insights into the intricate dynamics of free-surface flows and turbulent energy distribution, contributing to a deeper understanding of turbulence near a free surface. [Extracted from the article]

The article in the Journal of Fluid Mechanics discusses the skewness of vertical velocity in turbulent wall flows within the inertial sublayer. The study finds that the skewness of the vertical-velocity component remains constant and positive, ranging from 0.1 to 0.16, regardless of flow configuration and Reynolds number. A theoretical model is proposed to explain this behavior, highlighting the limitations of down-gradient closure approximations commonly used in large-scale meteorological and climate models. The study emphasizes the significance of understanding the skewness of vertical velocity in atmospheric modeling. [Extracted from the article]

The article "Plateau–Rayleigh instability in a capillary: assessing the importance of inertia" delves into the dynamics of liquid plug formation in thin channels due to the Plateau–Rayleigh instability. Through numerical simulations, the study uncovers the significance of inertia in a cylindrical capillary, revealing the existence of both viscous and inertial regimes with a threshold determined by film thickness. The research aims to enhance the understanding of two-phase flow in fuel cells by examining the impact of inertia on plug formation, showcasing the interplay of viscous, inertial, and convective effects in the occlusion process driven primarily by viscous forces. [Extracted from the article]

The article explores the use of single-snapshot machine learning for super-resolution of turbulence, investigating the effectiveness of nonlinear machine learning techniques in extracting physical insights from turbulent flow. Through training a machine-learning model with flow tiles from a single snapshot, successful flow reconstruction is demonstrated for two-dimensional and three-dimensional turbulent flows. The findings suggest that machine learning can utilize scale-invariance properties to learn turbulent flows and that prior knowledge can inform the design of models and data collection for data-driven analyses of turbulence. The document includes references to studies on fluid mechanics, turbulence, and deep learning, covering topics such as unsupervised deep learning for super-resolution reconstruction, data-driven prediction of unsteady flow, machine-learning-based feedback control for drag reduction, and physics-informed neural networks for solving nonlinear partial differential equations. These studies offer valuable insights into applying advanced computational methods to understand and predict turbulent fluid dynamics. [Extracted from the article]

In the article "Release of a finite volume of viscous fluid over rigid curvilinear surfaces" by Xiaoning Di and Herbert E. Huppert in the Journal of Fluid Mechanics, the authors investigate the behavior of viscous gravity currents over rigid curvilinear surfaces using low-dimensional models. They study the flow patterns over linear-exponential and sinusoidal surfaces, observing phenomena such as current trapping, bypassing peaks, and hindered propagation. Computational fluid dynamics simulations validate the models, showing consistent predictions for fluid evolution over different curvilinear shapes. The study also explores the impact of release volumes, initial lengths, and surface shapes on fluid propagation, highlighting the influence of shape parameters on current evolution. [Extracted from the article]

The article explores how a reaction-driven decrease in viscosity affects viscous fingering patterns at different injection flow rates. Research shows that at high flow rates, the reaction leads to thinner fingers covering a smaller area due to enhanced shielding effects, while at low flow rates, the reaction stabilizes the displacement, resulting in almost stable patterns. The study emphasizes the role of diffusivity in determining the impact of reactions on viscous fingering patterns, particularly in relation to varying Péclet numbers. [Extracted from the article]

The article "Local spiky contacts during impact of an emulsion drop on a solid surface" in the Journal of Fluid Mechanics delves into the impact dynamics of emulsion drops on solid surfaces. It discusses how rapid deceleration of the drop results in the formation of spikes on the free surface, which then make local contacts with the solid. The research emphasizes the role of density differences between oil droplets and water in spike formation, with spikes appearing when the oil is denser. High-speed video technology enables detailed observations of spike emergence and shape during impact, shedding light on the intricate interplay of surface tension, viscosity, and impact velocity in determining drop dynamics. The document also includes references to various scientific studies on droplet impact dynamics, covering topics like droplet splashing, air bubble entrapment, collapse of air films, and the impact of solid substrates on emulsion drops. These studies, utilizing high-speed imaging techniques, contribute to the understanding of fluid dynamics and have implications for engineering and materials science applications. [Extracted from the article]

Ali Arslan's article in the Journal of Fluid Mechanics explores heat transport in rotating internally heated convection, establishing lower bounds on mean temperature and heat flux at infinite Prandtl number. The study provides insights into different regions of buoyancy-to-rotation dominated convection through two estimates on vertical velocity. The research also delves into the scaling of the critical Rayleigh number for convection onset in rotating systems, with valid bounds for R ≥ 6.1216. The text discusses the bounds and scaling laws for internally heated convection with rotation, emphasizing the impact of rotation on heat transport and potential future research directions in the field. [Extracted from the article]

The article "Influence of three-dimensionality on wake synchronisation of an oscillatory cylinder" in the Journal of Fluid Mechanics examines how three-dimensionality affects the synchronization of wakes behind an oscillating circular cylinder. Using phase-reduction analysis, the study compares the synchronizability of different cylinder oscillations and finds that three-dimensional wakes have lower phase-sensitivity functions, making synchronization with weak cylinder oscillations more challenging. The research suggests that phase-reduction analysis can be a valuable tool for studying synchronization in complex fluid flows, shedding light on the dynamics of wake synchronization in fluid dynamics. [Extracted from the article]

The article "Impulse-driven release of gas-encapsulated drops" in the Journal of Fluid Mechanics delves into the behavior of gas-encapsulated drops when subjected to impulsive laser-induced shock waves. Through experimental X-ray imaging and numerical simulations, the study categorizes three drop release regimes based on bubble interface shape and associated Weber and Reynolds numbers. The research aims to enhance understanding of the release process for potential applications in fluid transport and mixing techniques. The dynamics of shock-induced gas-encapsulated drops are explored in different regimes, shedding light on the complex interplay of factors influencing drop release within bubbles. [Extracted from the article]

The article delves into the dynamics of imbibition in a flattened triangular channel, focusing on the flow of liquid films in the corners. Two scenarios are considered: constant flow rate and constant pressure at the inlet, with a model that accurately predicts the evolution of the bulk meniscus and triple point positions. Experimental data validation confirms the model's accuracy, emphasizing the significance of corner films in understanding capillary flows in irregular channel geometries. The document also explores various studies on capillary imbibition, fluid dynamics, and capillary rise in different geometries, contributing to a deeper understanding of fluid behavior in diverse environments. [Extracted from the article]

The article "Free-surface effects on the flow around two circular cylinders in tandem" delves into the impact of a free surface on the flow dynamics of two circular cylinders in tandem. The study, conducted through numerical simulations at a Reynolds number of 180, identifies various flow regimes, including trailing wakes, single vortex shedding wakes, and co-shedding wakes. The research highlights the influence of the free surface on wake patterns, hydrodynamic forces, and free-surface deformations, revealing complex interactions between the flow structures and the free surface in the wake of the cylinders. [Extracted from the article]

The article "Dynamics of a thin film of fluid spreading over a lubricated substrate" in the Journal of Fluid Mechanics delves into the gravity-driven flow of a thin film of viscous fluid over a lubricated rigid plate. By utilizing lubrication theory, the study examines the resistance caused by vertical shear and identifies different flow regimes based on key dimensionless parameters. The research highlights the behavior of the intruding layer, particularly in relation to viscosity ratios, and uncovers a frontal stress singularity near the intrusion front. The findings have implications for industrial coating processes, as well as geophysical events like lava flows and ice sheet dynamics. [Extracted from the article]

The article delves into the stability of falling films inside a tube, emphasizing the influence of viscoelasticity on plug formation and instability classification. Long-wave models are utilized to analyze factors like Bond number, film thickness, and Weissenberg number, revealing that viscoelasticity enhances plug formation and absolute instability. The study also investigates the impact of polymers on plug formation and offers insights into the dynamics of thin liquid films in vertical cylindrical fibers. This collection of research articles, published by Cambridge University Press, explores fluid mechanics topics such as mucus dynamics in airways, viscoelasticity in airway closure models, and film flows down inclined planes, shedding light on the intricate dynamics of fluid flow in various scenarios. [Extracted from the article]

The article "Viscous Marangoni migration of an inviscid bubble by surfactant spreading: an exactly solvable model" in the Journal of Fluid Mechanics explores the movement of an inviscid bubble in a viscous fluid due to surfactant spreading. The study analyzes the bubble's speed and displacement based on initial surfactant distribution, identifying a weak finite-time singularity. An exact solution is derived for infinite surface Péclet number using the method of characteristics, with special initial conditions leading to explicit solutions in terms of the Lambert W-function. The research delves into the viscous Marangoni migration of a two-dimensional bubble, offering insights into the dynamics of Marangoni flows and potential advancements in the field. [Extracted from the article]

The article "Velocity gradient partitioning in turbulent flows" published in the Journal of Fluid Mechanics discusses the decomposition of the velocity gradient tensor into normal straining, pure shearing, and rigid rotation tensors in various turbulent flows. The study shows that the partitioning of velocity gradients in forced isotropic turbulence aligns with previous findings and applies to wall-bounded turbulence as well. The results indicate that the isotropic partitioning is broadly applicable in regions with weak mean shearing, highlighting the importance of the normality-based partitioning for turbulence modeling. The study also explores the impact of mean shearing strength and friction Reynolds numbers on the partitioning profiles in different flow regimes. [Extracted from the article]

The article "Unveiling the mystery of effective slip" published in the Journal of Fluid Mechanics explores the concept of boundary layers in fluid flows, tracing back to Leonardo da Vinci's observations of pipe flow. It discusses the historical development of slip length theories and the applicability of the no-slip boundary condition at fluid-solid interfaces. Lauga & Stone (2003) proposed an effective slip model to bridge microscopic wall conditions to macroscopic slip lengths, impacting fluid dynamics research and surface design applications. The model provides insights into slip boundary conditions over complex boundaries and offers a framework for understanding fluid behaviors near fluid-solid interfaces. [Extracted from the article]

The article in the Journal of Fluid Mechanics discusses the impact of drops on solid surfaces at the nanoscale level, highlighting the importance of nanoscale interactions in fluid dynamics. The study by Li et al. (2015) uses ultra-fast imaging to explore the effects of nano-roughness on contact line motion during drop impact. The research reveals the intricate dynamics of drop impact and the influence of substrate parameters emerging from the nanoscale, shedding light on the complex interplay between fluid dynamics and surface properties. [Extracted from the article]

The article explores the impact of periodic surface coverages on turbulence characteristics in open channel flows, particularly relevant for floating solar farms. Lower coverage percentages are found to increase turbulence intensity and skin friction, affecting the formation of coherent structures. The study highlights the need for further research to understand the dynamics of vortices and energy dissipation in different flow conditions. Additionally, the document includes a list of research articles covering various aspects of fluid mechanics, turbulence, and channel flow, offering valuable insights into the complex behavior of fluids in different environments. [Extracted from the article]

The article "Thrust generation by shark denticles" delves into the hydrodynamic properties of shark denticles in reducing drag during flow separation. By conducting direct numerical simulations, the research uncovers a reverse pore flow beneath the crowns of the denticle array, resulting in significant thrust. The study highlights the intricate relationship between denticle structure and flow dynamics, offering insights into potential engineering applications for drag reduction. Overall, the text underscores the sophisticated geometrical features of shark denticles that facilitate reverse pore flow, showcasing their potential for bio-inspired surface structures in various sectors. [Extracted from the article]

The Journal of Fluid Mechanics has reached a significant milestone with the publication of its 1000th volume, showcasing original research in fluid mechanics since 1956. The journal, known as 'JFM,' has evolved over the years, now publishing over 1000 papers annually online. Embracing excellence, international collaboration, and inclusivity, JFM continues to uphold high standards in academic publishing. The journal has also introduced innovative publishing formats, such as Perspectives and Rapids articles, to enhance accessibility and transparency in reporting fluid mechanical research. [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 reflects on the establishment of the Journal of Fluid Mechanics (JFM) in 1955 and the creation of the G.K. Batchelor Prize in the 2000s. It highlights the meticulous standards set by George Batchelor, the founder of JFM, and his collaboration with Cambridge University Press (CUP) to enhance the journal's quality. The article also discusses the evolving trends in fluid mechanics research, with a focus on topics like turbulence and biological fluid dynamics. Additionally, it mentions the prestigious G.K. Batchelor Prize, awarded every four years to recognize outstanding contributions in fluid mechanics. [Extracted from the article]

The article "Microbial growth within porous gravity currents" delves into the effects of microbial activity on buoyancy-driven flow in porous layers, specifically examining how biofilm growth alters rock heterogeneity, porosity, and permeability. Through numerical simulations, the study illustrates the evolution of flow dynamics over time, emphasizing the intricate relationship between microbial growth and fluid migration in porous media. The text also discusses the implications of microbial growth on gravity-driven flows in porous media, particularly in the context of underground hydrogen storage, analyzing different regimes of bioclogging and their respective impacts on fluid migration. Overall, the document compiles various research articles on fluid dynamics in porous media, shedding light on topics such as biofilm growth, hydraulic properties, and the complexities of fluid migration in confined porous layers. [Extracted from the article]

The article "The entrainment hypothesis – 80 years old and still going strong" published in the Journal of Fluid Mechanics discusses the entrainment hypothesis proposed by G. I. Taylor 80 years ago. The hypothesis states that the mean inflow velocity across the boundary of a turbulent flow is proportional to a characteristic velocity of the flow. The article explores the application of this hypothesis in various geophysical flows, such as convective clouds, ocean currents, and magma chambers, highlighting its success in predicting entrainment. Additionally, the article delves into the impact of the entrainment hypothesis on disciplines like engineering and oceanography, emphasizing its significance in understanding turbulence and mixing in stratified fluids. [Extracted from the article]

The article discusses the early years of the Journal of Fluid Mechanics, focusing on the period from 1955 to 1962. It highlights the establishment of the journal in 1956 by Dr. G. K. Batchelor and the editorial team involved. The article also delves into the challenges faced by the journal, such as slow growth and difficulties with the initial publisher, Taylor & Francis. The editorial process, including peer review and copy-editing, is detailed, along with the importance of book reviews in the journal. The article concludes by acknowledging the significant impact of the Journal of Fluid Mechanics on the field of fluid dynamics over the past 60 years. [Extracted from the article]

The article in the Journal of Fluid Mechanics delves into the swirling instability of liquid jets in gas environments, specifically focusing on the effects of axial shear stress and jet rotation on mode transitions. The study combines theoretical analysis with experimental validation to highlight the significance of axial shear effects in determining predominant instability modes. By exploring the delay of azimuthal mode transitions due to enhanced axial shear stress, the research provides valuable insights into the physical mechanisms of swirling jet instability, with implications for applications such as liquid atomization and combustion. Various experimental investigations on liquid breakup and injection characteristics further contribute to understanding the complex dynamics of viscous swirling liquid jets. [Extracted from the article]

The study in the Journal of Fluid Mechanics investigates how falling liquid threads can be stabilized by distorting their cross-sectional shape with vertically hung fibers. Below a critical flow rate, the thread can be stabilized into a smooth column with a non-circular cross-section, suppressing instability. The research establishes a stability threshold based on the thread's geometry and length scale, presenting a scaling law for bead velocity when instability occurs. The findings suggest that the stability of falling liquid threads is influenced by their cross-sectional shape and dimensions, with potential applications to other slender geometries like ribbons. Further research is needed to explore the impact of aspect ratios and non-wetting liquids on thread stability. [Extracted from the article]

The article "Sorting capsules in microfluidic devices" published in the Journal of Fluid Mechanics discusses the use of microfluidic systems for sorting and enriching deformable particle suspensions. The study by Lu et al. explores the interactions between suspended capsules and surrounding fluid in a branched microchannel, providing insights for precise control of microfluidic devices. The research has implications for biotechnology applications and offers guidance for experimental setups. The study's findings can be applied to understand flows of deformable cells in complex geometries and have potential applications in microvascular flows and cancer metastasis research. [Extracted from the article]

The article "Slip due to kink propagation at the liquid–solid interface" delves into the concept of liquid slip at the boundary between a liquid and solid surface. Through molecular dynamics simulations, researchers discovered that liquid slip can be influenced by localized nonlinear waves that travel rapidly, rather than just surface diffusion. This study uncovers a new understanding of slip mechanisms at the liquid–solid interface, emphasizing the role of wave propagation and its implications for various practical uses. The research sheds light on the intricate dynamics of slip behavior and offers insights into potential applications in fields such as catalysis and mixing on a small scale. [Extracted from the article]

The article delves into the scaling relations for heat and momentum transport in sheared Rayleigh–Bénard convection, extending the Grossmann & Lohse theory. Through direct numerical simulations, the study confirms theoretical assumptions on large-scale convection rolls and flow structure alignment in different regimes. The results align well with the scaling relations derived from the theoretical framework, shedding light on the behavior of sheared thermal convection systems. The research explores the impact of shear forcing on flow dynamics, transitioning from buoyancy-dominated to shear-dominated regimes, and proposes scaling laws for heat transport and friction coefficients. The document presents simulations of sheared Rayleigh–Bénard convection, varying parameters to study heat transfer and flow dynamics in turbulent convection, contributing to a better understanding of thermal convection phenomena and their applications. [Extracted from the article]

The article delves into the impact of surface textures on turbulent flow, particularly examining slip/no-slip textures. It highlights that slip boundary conditions can accurately represent small textures' effects on flow, but deviations from smooth-wall behavior emerge as texture size increases. The study introduces an amplitude-modulated forcing model to predict turbulence over superhydrophobic surfaces, showing good agreement with simulations up to a certain texture size. The research also explores the influence of Reynolds number on results and provides a list of related articles on fluid mechanics topics like drag reduction and turbulent flow near walls, aiming to enhance understanding of turbulence dynamics and fluid flow in various conditions. [Extracted from the article]

The article published in the Journal of Fluid Mechanics discusses the derivation of a lubrication-mediated model for droplet rebounds off deep liquid baths, focusing on the presence of a dynamic air layer that acts as a lubricating pressure transfer. The study includes numerical simulations of axisymmetric rebounds of solid spheres and compares the results to existing literature and experimental data. The model provides detailed insights into the behavior within the thin lubrication region and offers a mathematical structure that mediates the interaction between the droplet and bath free-boundary evolutionary equations. The research aims to advance the understanding of droplet impacts and rebounds in various configurations, contributing to the broader field of fluid dynamics. [Extracted from the article]

The article "Ordinal pattern-based analysis of an opposition-controlled turbulent channel flow" delves into the drag-reduction mechanism in turbulent channel flow through a symbolic dynamics approach. By focusing on the impact of opposition control, the study reveals that drag reduction is achieved by suppressing momentum transport and regeneration cycles near the wall. Various analytical methods are employed to analyze the spatiotemporal dynamics and randomness in the flow, emphasizing the significance of understanding drag reduction in controlled turbulent flows for energy conservation. The research sheds light on the intricate mechanisms at play in opposition-controlled turbulent channel flow, offering valuable insights for further exploration in the field. [Extracted from the article]

The article delves into the behavior of viscoelastic films flowing over grooved surfaces with partial wetting, examining the influence of fluid elasticity and shear thinning on flow characteristics. Results indicate that fluid elasticity affects different solution families in varying ways, impacting wetting lengths and flow patterns. The study reveals how elasticity can smooth flow transitions and alter flow regimes, with shear thinning effects leading to changes in viscoelastic stresses and flow behavior. Additionally, the text explores the impact of substrate geometry, wettability, and inclination angles on flow patterns, emphasizing the importance of understanding the interplay between rheological properties and geometric characteristics in controlling substrate wetting. The document also includes a compilation of scientific research articles focusing on the dynamics of viscoelastic fluids in various contexts, offering insights into topics like spin coating, film flow over substrates, and the behavior of viscoelastic flows in different conditions. [Extracted from the article]

This document explores the impact of wind on the shape of shoaling and overturning waves using a two-phase DNS model, focusing on the wind Reynolds number (Re ∗) and its effects on wave shape. The simulations reveal that wind influences wave faces' steepness and geometrical parameters of overturning waves, with pressure and viscous stresses playing a role at the air-water interface. The findings suggest that wind significantly affects wave shape and overturning dynamics, potentially impacting coastal engineering and morphological evolution. The research compiled in this document provides valuable insights into fluid mechanics, surf zone dynamics, wind wave growth, and numerical modeling of wind effects on breaking waves, published in reputable journals. [Extracted from the article]

The article in the Journal of Fluid Mechanics introduces a two-scale Reynolds stress model designed to accurately represent high-Reynolds-number effects in fully developed channel flows. Through comparisons with direct numerical simulations, the model demonstrates its ability to capture these effects effectively. The study emphasizes the significance of a multi-scale approach in addressing the limitations of single-scale turbulence models commonly used in wall-bounded flow applications. While some limitations are acknowledged, the overall agreement between the model and data is deemed satisfactory, underscoring the importance of multi-scale modeling in comprehending high-Reynolds-number effects in turbulent flows. [Extracted from the article]

The article "Log at first sight" published in the Journal of Fluid Mechanics discusses the long-standing debate in pipe flow physics regarding whether fluid friction follows a logarithmic or algebraic decay. McKeon et al. (2005) conducted detailed measurements at the Princeton facility, concluding that the logarithmic law prevails. The study highlights the challenges in determining the friction law at high Reynolds numbers and the ongoing debate between logarithmic and algebraic laws in pipe flows. The impact of the paper is evident from its citation records, and the search for a conclusive answer continues to intrigue mathematicians and physicists. [Extracted from the article]

The article explores the linear stability analysis of a liquid film over a moving substrate, emphasizing the impact of varying film thickness and liquid properties on instability mechanisms. The study reveals that stabilizing mechanisms are influenced by the balance of forces, with surface tension effects diminishing as Kapitza numbers decrease. Results show that as the Kapitza number decreases, the maximum growth rate increases, with different liquids exhibiting varying growth rates and phase speeds of unstable perturbations. The study also delves into absolute and convective instabilities, providing insights into the stability of liquid films in industrial processes and potential applications in optimal control strategies. [Extracted from the article]

The article published in the Journal of Fluid Mechanics explores Keplerian turbulence in Taylor-Couette flow of dilute polymeric solutions. The study uses direct numerical simulations to investigate the flow induced by elastorotational instability in viscoelastic Taylor-Couette flow with Keplerian rotation. The research reveals intriguing vortices with axial length scales smaller than the gap width, distinct from classic centrifugally induced Taylor vortices. The study establishes scaling behaviors in key flow quantities and presents an analytical relation between viscous and elastic dissipation rates of kinetic energy and angular momentum transport. The findings pave the way for future research on astrophysics-related Keplerian turbulence and angular momentum transport. [Extracted from the article]

The article "Interfacial instability in a viscoelastic microfluidic coflow system" delves into the study of interfacial instability in microfluidic systems using Newtonian and viscoelastic fluids. By categorizing system behavior into stable and unstable regimes based on wave speed and dispersion relationship, researchers have found that adjusting fluid properties can control instability. The research aims to improve understanding of interfacial flows in microfluidics for applications such as droplet generation and cell encapsulation. The study offers valuable insights into manipulating small objects in microfluidic systems, highlighting the complex interplay between viscosity and elasticity in flow instability. [Extracted from the article]

The article in the Journal of Fluid Mechanics explores the instability evolution of shock-accelerated cylindrical fluid layers with arbitrary Atwood numbers. The study extends a previous model to cover cases with different Atwood numbers using linear stability analysis and confirms its accuracy through numerical simulations of three fluid-layer configurations. The research highlights the impact of the Atwood number on perturbation growth at the inner interface, providing insights into the mechanisms underlying this effect. The model effectively describes the instability evolution of shock-accelerated cylindrical fluid layers and suggests further research to investigate additional parametric effects on instability evolutions. [Extracted from the article]

The article "Experimental and numerical investigation of inertial particles in underexpanded jets" delves into the behavior of inertial particles in underexpanded jets through experiments and simulations, focusing on their impact on shock structures and gas-phase dynamics. High-speed imaging and particle tracking were used to analyze flow characteristics, revealing complex interactions between particles and gas-phase flow. The study highlights the shift in Mach disk location towards the nozzle due to strong two-way coupling effects, with findings suggesting the need for improved models to handle such interactions in compressible flows containing solid particles. [Extracted from the article]

The article "Existence of Bolgiano–Obukhov scaling in the bottom ocean?" in the Journal of Fluid Mechanics delves into turbulent mixing and energy transfer in the ocean's bottom layers, particularly in the South China Sea. It identifies three distinct layers with varying stratifications and examines the scaling behavior of temperature spectra in these layers. The study suggests that convective turbulence in the bottom ocean may not consistently follow the Bolgiano-Obukhov scaling, emphasizing the intricate relationship between stratification and turbulent intensity. The document also includes references to other studies on oceanic bottom boundary layers, turbulence, and mixing in different environments, offering diverse perspectives and methodologies for further research in fluid dynamics and turbulence. [Extracted from the article]