1255 papers
Fluid dynamics explores how liquids and gases move, shaping everything from weather patterns to the flow of blood through our veins. This field bridges the gap between abstract mathematical equations and the tangible forces that drive our physical world, offering insights into turbulence, aerodynamics, and fluid behavior in complex environments.
On Gist.Science, we process every new preprint in this category directly from arXiv to make cutting-edge research accessible to everyone. Each paper is transformed into a clear, plain-language overview alongside a detailed technical summary, ensuring both students and experts can grasp the latest findings without getting lost in dense jargon.
Below, you will find the most recent studies in fluid dynamics, curated and explained for a broader audience.
This study utilizes 2D URANS simulations to demonstrate that while increasing blade count or chord length enhances the self-starting acceleration of Darrieus vertical-axis wind turbines, both modifications ultimately reduce the attainable steady-state tip-speed ratio due to intensified blade-vortex interactions and increased viscous losses.
This study reveals that despite differences in Reynolds number, the large-scale vortical structures driving transient lift variations during extreme gust encounters over a square wing exhibit striking topological similarities between laminar and turbulent flows, suggesting that low-Reynolds-number models can effectively inform the understanding and control of high-Reynolds-number extreme aerodynamics.
This study combines micro-PIV experiments and CFD simulations to characterize the hydrodynamics, flow regimes, and scaling laws of droplet generation in a T-shaped cylindrical microfluidic device, ultimately providing predictive correlations for optimizing droplet size and formation dynamics across varying flow conditions.
This study demonstrates that large-eddy simulations employing a tabulated flamelet model with detailed transport and thermodiffusion effects accurately predict the structure and global characteristics of a lean hydrogen turbulent jet flame, while revealing that thermodiffusion is critical for reactivity whereas wall heat losses have negligible impact.
This study presents an improved stability-based transition transport model that incorporates wall heating effects through physics-based correlations derived from linear stability theory, successfully predicting transition advancements in heated airship flows and enabling future laminar-flow control via wall-temperature modulation.
This paper presents a novel finite element formulation for incompressible viscous flow that directly minimizes the L2 norm of the pressure gradient using Q9 elements, thereby eliminating pressure degrees of freedom while delivering stable, oscillation-free solutions, built-in error indicators, and viscosity estimation capabilities without requiring stabilization techniques.
This paper investigates two-phase stratified magnetohydrodynamic flows in horizontal rectangular ducts using numerical and analytical methods to demonstrate how the presence of a non-conductive gas layer, combined with varying wall conductivities and magnetic field orientations, fundamentally alters flow characteristics such as velocity distribution, pressure gradient, and pumping power compared to single-phase systems.
This paper presents a thermodynamically consistent, non-isothermal phase-field model that incorporates Korteweg stress to accurately simulate the coupled dynamics of melt flow and solidification, revealing how thermal capillary effects and viscosity interpolation schemes influence dendritic growth morphology and velocity.
This study bridges the gap between laboratory models and ecological reality by using Particle Image Velocimetry on copepods to demonstrate that downward and upward swimming generate distinct flow fields, ultimately revealing that organism weight and fluid stratification significantly constrain biogenic hydrodynamic transport and its role in global ocean biogeochemistry.
This paper advocates for a more rigorous test problem for viscous hydrodynamics codes by introducing a nonuniform-density Gaussian velocity shear scenario that exposes errors in the calculation of viscous stress tensors, fluxes, and source terms, while also providing a detailed exposition of the Navier-Stokes equations in various coordinate systems.