989 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 wall-normal velocity variance across various canonical wall-bounded turbulent flows, revealing that deviations from a universal constant are primarily driven by local shear stress variations and low-wavenumber "inactive" motions, while a semi-empirical fit successfully predicts variance trends that align with the attached eddy hypothesis in the high-Reynolds-number limit.
This paper introduces a fully local, adaptive repulsive flux within a conservative Allen-Cahn phase-field lattice Boltzmann model to effectively prevent spurious coalescence in multiphase flow simulations by dynamically adjusting interaction strength based on estimated local film thickness, thereby ensuring robust and physically consistent near-contact dynamics without sacrificing computational efficiency.
This paper introduces RIO, a label-free Fabry-Pérot interferometric tool that achieves high-precision, quantitative imaging of microscale two-dimensional concentration gradients in microfluidic systems without the need for molecular labeling.
This paper investigates the coalescence of identical viscous blisters beneath an elastic sheet through experiments, numerical simulations, and a one-dimensional lubrication model, revealing that short-time dynamics are primarily governed by the elastic sheet's bending, which establishes a specific relationship between coalescence speed and the interface's radius of curvature.
This paper formulates a relativistic hydrodynamic theory for fluids with spin and intrinsic dilation charges, deriving constitutive relations that reveal gapped dilation excitations and scale-anomaly-induced transport effects, which reduce to microstretch fluid dynamics in the nonrelativistic limit and apply to rapidly expanding or contracting nearly conformal systems.
This paper presents a high-resolution, single-camera method that combines rapid light-sheet scanning with a neural autoencoder incorporating isometricity constraints to accurately reconstruct the complex 3D deformations of transparent, crumpled sheets in flow.
Through high-resolution direct numerical simulations up to a Reynolds number of 8000, this study demonstrates that stratified inclined duct flow transitions to an ultimate turbulent regime characterized by enhanced transport scaling () and logarithmic velocity profiles via a subcritical, hysteretic mechanism, thereby bridging the gap between laboratory limitations and realistic geophysical mixing conditions.
This study reveals that the wettability, density, and size of floating microparticle rafts critically govern raindrop impact dynamics—specifically splash onset, jet formation, and microplastic aerosolization—by establishing distinct interfacial regimes that ultimately collapse under a unified geometric-inertial-capillary scaling law.
This paper establishes a general framework to analyze nonlinear mode-mode interactions in a Mach 6 transitional boundary layer, revealing that multiple coexisting primary instabilities drive complex energy transfers and early secondary growth through triadic forcings and base-flow-dependent resolvent leverage, challenging the applicability of conventional secondary stability analysis.
This paper employs a coupled Cahn-Hilliard and ALE numerical framework to establish a unified scaling law and identify an optimal cell blockage ratio () that governs the deterministic, damage-free encapsulation of hyperelastic cells in microfluidic droplets by elucidating the complex fluid-structure interactions and geometric blockage effects during droplet generation.