995 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.
The paper claims that the theoretical maximum power extraction efficiency of a wind turbine is approximately 78% rather than the traditional 59% (Betz limit), arguing that the historical limit is based on a derivation that violates fundamental physical equations.
This paper proposes a few-shot, physically restorable symbolic regression turbulence model based on a normalized general effective-viscosity hypothesis that achieves high accuracy and generalizability across diverse flow regimes using limited training data.
This paper uses high-resolution Large Eddy Simulations (LES) to investigate the fundamental turbulence-chemistry interactions of the catalyst-free reverse water-gas-shift process, finding that trace amounts of oxygen significantly enhance CO production and that standard combustion subgrid models are effective for this endothermic reaction.
The paper demonstrates that subtle rarefaction effects in turbulent flows can cause "constitutive degeneracy" in Navier-Stokes simulations, leading to significant errors in predicting surface shear stress and heat flux during rocket plume impingement.
This paper uses numerical simulations to demonstrate that tuning substrate wettability patterns, such as annular bands and radial contact angle gradients, allows for precise control over the stability, breakup dynamics, and resulting droplet morphology of ring-rivulets.
This study investigates the linear stability of viscous Riemann ellipsoids by deriving a generalized Poincaré equation for inviscid oscillations and applying boundary-layer analysis to quantify first-order viscous corrections, ultimately providing comprehensive stability diagrams that elucidate the roles of rotation, strain, and diffusion in geophysical and astrophysical flows.
This study systematically investigates how aspect and mass ratios influence the flapping dynamics, wake vortex formation, and drag of flags by combining time-resolved measurements with a parameter-free kinematic model to predict mean drag coefficients based on mass ratio and tip speed.
This study utilizes a two-fluid model coupled with Vinen's equation to numerically explain the multistable wake topologies and anomalous upstream eddies in He II counterflow past a cylinder, revealing that self-organized mutual-friction dissipation reshapes the effective obstacle and establishing a unified phase diagram that predicts these discrete states based on the normal-fluid Reynolds number and interaction strength.
This study compares an inviscid vortex sheet model with Navier-Stokes simulations across approximately 70 unsteady plate motions at moderate Reynolds numbers, demonstrating that the inviscid approach accurately predicts forces and flow structures in body-dominated regimes while showing reduced accuracy at low angles of attack in flow-dominated configurations.
This paper validates a high-order compact finite difference compressible solver by demonstrating its accuracy in capturing shocks, resolving vortical structures, and matching statistical data across five canonical flow cases.