1255 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 presents a revised, energy-conserving theoretical model for the attenuation of long waves through regions of irregular floating ice and random bathymetry, which corrects previous over-predictions by utilizing ensemble averaging of transfer matrix eigenvalues and successfully reproduces key features of field data, including frequency-dependent attenuation rates and high-frequency roll-over effects.
This paper proposes a probabilistic reconstruction method that enhances the "Advection of the image point" hyper-parameterisation approach to accurately and efficiently approximate ocean dynamics from limited data, demonstrating superior speed and accuracy compared to traditional high-resolution NEMO model simulations while offering potential applications in operational forecasting and data gap filling.
This study explains the emergence of nearly constant mean angular momentum profiles in high-Reynolds-number Taylor–Couette turbulence by demonstrating that incorporating the history effects of Reynolds stress, specifically through the convection term modeled via the Jaumann derivative, is essential for accurately predicting these profiles in the featureless ultimate regime.
This paper investigates the sensitivity of the Reynolds lubrication equation to large surface gradients and compares its predictions with Stokes flow solutions in various corner geometries, demonstrating that while pressure drop errors increase with steeper gradients, the recirculation zones observed in Stokes flows do not significantly disrupt bulk flow characteristics.
This paper presents experimental evidence and a supporting theoretical model demonstrating that the interaction between surface waves and ambient sub-surface turbulence generates a near-surface Eulerian-mean flow that opposes and partially cancels the Stokes drift, thereby significantly altering the vertical redistribution of momentum and the transport of water-borne materials in the ocean.
This paper demonstrates that arbitrarily small odd-parity perturbations fundamentally alter the topology of zero-helicity vortices and field-reversed configurations by transforming their interior flux surfaces from toroidal to simply connected, thereby necessitating a revision of established models in both fusion confinement physics and fluid dynamics.
This paper extends a theoretical model of wave attenuation through broken floating ice of random thickness to finite water depths, utilizing multiple scales analysis to derive an explicit attenuation expression that predicts an eighth-power frequency dependence at low frequencies and shows strong agreement with numerical simulations and field measurements.
This paper presents a new formulation of extended lubrication theory and demonstrates through comparison with existing models and numerical Stokes solutions that its accuracy depends significantly on surface variation magnitude and length scale ratio, making it suitable for a wide range of fluid domain geometries.
This paper presents a Hybrid High-Order (HHO) formulation for variable density incompressible flows that ensures exact volume conservation and pure density advection through a combination of hybrid spatial discretization and ESDIRK time stepping, demonstrating robustness, pressure-independence, and high-order accuracy in simulating immiscible fluid mixtures and Rayleigh-Taylor instabilities.
This paper demonstrates that the phase separation dynamics of multicomponent fluid mixtures are fundamentally governed by topological constraints analogous to mathematical coloring problems, which in confined geometries can arrest hydrodynamic coalescence and lead to universal coarsening behavior.