1274 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 paper experimentally investigates how finite-system size influences gravity-capillary wave turbulence by demonstrating a smooth transition from discrete to continuous wave turbulence and showing that confinement alters wave dynamics by depleting specific three-wave resonant interactions.
This study compares the widely used Borgnakke-Larsen model with the more theoretically rigorous Pullin model for simulating translational-rotational energy exchange in diatomic gases using the DSMC method, demonstrating that the Pullin model provides a more consistent physical foundation while maintaining comparable efficiency to the BL model in highly rarefied flows.
This paper investigates the scattering and frequency conversion of acoustic waves interacting with single and double spatio-temporal interfaces, analyzing how different velocity regimes (subsonic, intersonic, and supersonic) affect wave behavior through analytical derivations and numerical simulations.
The paper proposes "StabOp," a novel data-driven stabilization operator learned through PDE-constrained optimization that outperforms traditional spatial filters in providing highly accurate reduced order models for convection-dominated flows.
This paper presents a three-dimensional two-temperature Gas-Kinetic Scheme (3D 2T-GKS) on unstructured meshes that utilizes a novel Generalized Kinetic Boundary Condition and a Discontinuity Feedback Factor to accurately simulate complex hypersonic shock-wave/boundary-layer interactions and thermal non-equilibrium effects.
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 study demonstrates that the flow of hydrogel granular rafts follows a universal constitutive law that transitions from dry granular rheology with nonlocal effects in the shear band to damped viscous flow in the outer creep region.
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.
This paper proposes a robust, fully coupled implicit finite-volume algorithm combined with a front-tracking method to accurately simulate incompressible viscoelastic interfacial flows at high Weissenberg numbers without the need for a log-conformation approach.