967 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 introduces a robust optimisation framework that combines variational residual minimisation with a resolvent-based Galerkin projection to efficiently compute invariant solutions, such as equilibria and periodic orbits, for wall-bounded flows like rotating plane Couette flow.
This paper evaluates the accuracy of a custom Lattice-Boltzmann solver in simulating two-dimensional turbulent flows around randomly located rigid disks, specifically analyzing the resulting von Kármán vortex streets while providing the implementation code for reproducibility.
This study validates two particle-resolved numerical simulation methods against Particle Image Velocimetry measurements of gas flow through a modular packed bed of rotated square bars at Reynolds numbers of 100 and 200, revealing that internal flow is primarily governed by void geometry while freeboard dynamics are dominated by unsteady jets, with both simulation approaches showing good agreement with experiments despite some deviations in the freeboard region.
This study combines digital in-line holography and ultra-high-speed pyrometry with a kinetic-transport modeling framework to characterize and predict the solid-phase oxidation and melting time scales of single micron-sized iron particles, revealing distinct oxygen-concentration dependencies across different phase transition stages to advance metal-fuel combustion design.
This paper demonstrates that applying a standing acoustic field to a liquid-liquid microfluidic coflow induces a unique, reversible stream-splitting regime that enables on-demand, spatially programmable droplet generation at high capillary numbers while maintaining a continuous residual flow.
This paper presents direct numerical simulations of fluctuating Navier-Stokes equations that provide decisive quantitative validation for the Lutsko-Dufty theory of nonequilibrium long-range correlations and the Forster-Nelson-Stephen dynamic renormalization group theory of anomalous transport, demonstrating their accuracy across regimes from viscous-dominated to strongly nonlinear shear flows.
This paper derives and analyzes a unidirectional asymptotic model for one-dimensional blood flow in viscoelastic arteries, establishing local well-posedness of strong solutions, proving global existence and exponential decay in the purely elastic regime for small data, and providing a numerical study of the model's dynamics across various viscoelastic and amplitude regimes.
This paper proposes a generalized spatio-temporal stochastic model for the turbulent dissipation field using Gaussian Multiplicative Chaos, validating its properties against Direct Numerical Simulations of the Navier-Stokes equations.
This study uses numerical simulations to demonstrate that viscoelastic flow through cylinder arrays transitions to elasto-inertial turbulence via a Ruelle-Takens-Newhouse route to chaos, driven by the interaction between vortex shedding and bulk flow, while showing no direct connection to purely elastic instabilities.
This study demonstrates that particle-coated interfaces impose minimal resistance to solute diffusion, revealing that particle monolayers only significantly hinder mass transfer at extreme coverage fractions beyond close-packing limits.