1256 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 molecular dynamics simulations to reveal that high-frequency alternating current electrohydrodynamic flow in nanopores is driven by localized heat generation from periodic water molecule alignment, creating a net directional flow in asymmetric electrode structures through buoyancy and electrothermal forces that operate independently of ionic concentration.
This paper presents a novel, computationally efficient nonlinear unsteady aerodynamic reduced-order model that integrates oscillator dynamics with Volterra theory to accurately reproduce complex aeroelastic shock buffet phenomena, such as lock-in, in three-dimensional transonic flows.
This study investigates the instability and breaking of internal waves in a horizontal shear layer by combining ray-tracing theory with direct numerical simulations to identify two distinct mechanisms—refraction-induced steepening and advection-driven momentum transfer—that govern wave-breaking dynamics, energy distribution, and turbulent dissipation.
This paper derives an explicit expression for the bulk viscosity of cold plasmas, demonstrating that it can vastly exceed shear viscosity and that the Mandelstam-Leontovich approximation is exact under these conditions, while also providing thermodynamic formulas for alkali-noble gas mixtures and discussing their implications for solar atmospheric heating and laboratory verification.
This paper presents a comprehensive linear and numerical analysis of the two-dimensional Kelvin-Helmholtz instability in collisionless plasmas with anisotropic pressure, revealing that the magnetohydrodynamic limit yields significantly larger growth rates, current densities, and magnetic island formation compared to the anisotropic CGL regime where energy is diverted into pressure anisotropies.
This paper introduces an adaptive Shannon transfer entropy framework to identify and characterize causally coherent structures and information fluxes within turbulent boundary layers, offering a generalizable approach for analyzing spatio-temporal causality in complex chaotic dynamical systems.
This paper establishes a link between the rheology of granular suspensions and velocity field fluctuations to derive effective Navier-Stokes equations for various flow regimes, revealing that while turbulent granular flows exhibit a direct kinetic energy cascade, they follow a scaling law distinct from that of standard Newtonian fluids.
This study numerically investigates how increasing wall slip in a hyperbolic channel flow enhances the alignment of short rigid fibers by extending the region of high orientation from the midplane toward the walls, utilizing an analytical velocity field and a second-order tensor formulation with hybrid closure.
This paper investigates and models a new paradigm for ultrasonic-driven coating, demonstrating how nanometer-amplitude surface acoustic waves can propel silicone oil films over topographical obstacles through a complex balance of acoustic streaming, capillarity, and gravity.
Using active fast Stokesian dynamics simulations, this study reveals that shear flow enhances energy dissipation while reducing relative viscosity in semi-dilute to concentrated suspensions of apolar squirmers, driven by unique microstructural signatures like enhanced nematic order and anisotropic pair correlations that distinguish the behavior of pushers and pullers from passive or purely motile systems.