967 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 investigates a frictional control mechanism in barotropic reentrant channel models, revealing that in low-drag regimes, Rossby wave radiation from barotropically unstable jets transports westward momentum to sustain an eddy-driven westward circumpolar current, offering a potential explanation for the complex frictional dynamics of the Antarctic Circumpolar Current.
This paper proposes and validates new analytical formulae for the turbulent boundary layer height in hurricanes outside the eyewall, offering significantly improved accuracy over existing models by incorporating friction velocity, absolute fluid vorticity, and background stratification to better predict wind profiles and storm characteristics.
Through direct numerical simulations and a stochastic Lagrangian model, this study demonstrates that turbulent pipe flow of thixotropic fluids can be accurately described by an effective purely viscous analogue across all thixotropic kinetic regimes, thereby revealing the fundamental feedback mechanisms between microstructure, rheology, and turbulence.
This study demonstrates that while 1D sedimentation theory accurately predicts the sedimentation rate of aqueous Kaolin suspensions in stagnant horizontal pipes, it fails to model sediment consolidation due to complex stress states involving pipe wall interactions, thereby establishing a foundation for predicting sedimentation under broader flow conditions.
This study demonstrates that additively manufactured, flow-optimized drill heads significantly reduce the minimum fluid flow required for stable ejector deep hole drilling by minimizing vortex formation and improving chip evacuation, as validated through combined smoothed particle hydrodynamics simulations and experimental testing.
This paper introduces the {\eta}-grid, an unstructured grid-generation framework for direct numerical simulations of wall turbulence that scales grid sizes with the local Kolmogorov scale, achieving accuracy comparable to conventional Cartesian grids while significantly reducing computational cost, particularly at high Reynolds numbers and over complex riblet geometries.
This study presents an exact analytical solution and numerical analysis demonstrating that while surface dilatational viscosity modulates the motion of a concentric droplet enclosing a translating particle, surface shear viscosity uniquely enhances motion in eccentric configurations due to symmetry breaking, collectively revealing how interfacial rheology, confinement, and geometry govern compound particle dynamics.
This paper presents a local, matrix-free entropic lattice Boltzmann method that accurately and stably solves the general anisotropic advection–diffusion equation with rotated, heterogeneous, and highly contrasting diffusion tensors, validated through extensive 3D benchmarks and applications ranging from Brownian rod dispersion to anisotropic Rayleigh–Bénard convection.
This study provides the first experimental evidence that longitudinal velocity scaling exponents in shear turbulence saturate at high orders (), a phenomenon observed at Taylor-scale Reynolds numbers up to 1400 that supports the dominance of localized vortex filaments in turbulent flows.
This chapter explores diffusio-osmotic transport in nanochannels as an entropically driven phenomenon that extends osmotic principles beyond semi-permeable membranes, demonstrating its significance in diverse applications ranging from enhanced diffusion and mechano-sensitivity to industrial-scale osmotic energy conversion.