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 study presents a grid-agnostic volume of fluid method for compressible multiphase flows that employs an ant-diffusive volumetric body force for interface sharpening and surface tension modeling, demonstrating accurate validation against analytical solutions and experimental data across various flow regimes.
This paper demonstrates that the common practice of maintaining a constant mean radius in wavy-walled tube models inadvertently increases interior volume, leading to significant discrepancies (up to 50%) in flow rate and hydraulic resistance compared to constant-volume models for both steady and peristaltic viscous flows, and provides a scaling law to relate these two cases.
This paper reviews a collisional -model for vertically vibrated confined granular fluids, deriving hydrodynamic equations via kinetic theory that predict stable homogeneous states, energy nonequipartition in mixtures, and the violation of Onsager reciprocity, with theoretical results showing strong agreement with numerical simulations.
This paper introduces FP-HMsNet, a novel deep learning architecture combining Fourier Neural Operators with a hierarchical multiscale preconditioner-solver framework that achieves state-of-the-art accuracy, robustness, and computational efficiency in modeling high-contrast subsurface fluid flow governed by the Darcy equation.
This paper presents an improved, weakly nonlinear multimodal model for acoustics in two- and three-dimensional curved ducts without flow, which extends previous work to include general curvature, torsion, and width variations to analyze effects like wave steepening and acoustic leakage, with potential applications to brass instruments.
This study employs a phase-field method to analyze the onset of buoyancy and thermocapillary instabilities in two-layer binary fluid systems near their upper critical solution temperature, revealing that increased solubility near this limit generally suppresses oscillatory convection while interfacial thickness and tension create complex, system-specific stability behaviors.
This paper proposes a scalable, data-driven algorithm that combines time-delayed embedding, Koopman theory, and linear optimal estimation to accurately forecast the future evolution of dominant structures in high-dimensional three-dimensional turbulent recirculating flows using sparse sensor data.
This study demonstrates that the performance and convergence of Galerkin-based reduced-order models for Couette flow are highly state-dependent, with linearized Navier-Stokes modes excelling near the laminar state and proper orthogonal decomposition modes being most effective for capturing turbulent statistics and coherent dynamics.
This paper introduces a novel framework using the differentiable hybrid climate model NeuralGCM to efficiently optimize initial conditions and generate physically consistent, worst-case heatwave storylines that exceed the intensity of traditional large-ensemble simulations, as demonstrated by the 2021 Pacific Northwest heatwave.
This paper extends the traditional first-order concept of protrusion heights for riblet drag reduction to a full higher-order asymptotic expansion, providing more accurate equivalent boundary conditions while revealing that nonlinearities in the Navier-Stokes equations enter the expansion in a surprisingly limited manner.