1245 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 investigates the nonlinear evolution of the Sun's most prominent high-latitude inertial mode () on a differentially rotating sphere, demonstrating through direct numerical simulations that it undergoes a supercritical Hopf bifurcation where Reynolds stresses smooth the differential rotation to saturate the instability at amplitudes comparable to solar observations.
This paper demonstrates that the macroscopic behavior of non-equilibrium two-phase flow in porous media can be successfully predicted by mapping droplet distributions onto an equilibrium spin-glass model derived via machine learning and the maximum entropy principle, revealing that the transition to a glassy flow regime with hysteresis and non-linear dynamics coincides with the spin-glass phase transition.
This study investigates autocatalytic reaction fronts in turbulent aqueous flows using oscillating grids and optical diagnostics, revealing distinct propagation regimes and demonstrating that even minor density differences significantly influence front dynamics by coupling chemical kinetics with flow-induced mixing.
This study introduces a computational framework combining Design-by-Morphing and Bayesian optimization to generate undulatory swimming profiles that achieve 16%–35% higher propulsive efficiency than traditional anguilliform and carangiform modes by optimizing kinematic parameters and redistributing energy through favorable surface stress distributions.
This paper presents an improved mechanistic model for wave energy attenuation in drifting sea ice that accounts for ice-water drag, successfully replicating observed non-exponential decay profiles and spatial variations in attenuation rates that traditional exponential models fail to capture.
This paper introduces a reduced-order modeling approach that utilizes the Lorenz attractor framework to simulate unsteady aircraft aerodynamics and wing rock phenomena by transforming Navier-Stokes equations into a system of three scalar ordinary differential equations, thereby capturing complex chaotic dynamics with significantly reduced computational cost.
Using molecular dynamics simulations and a validated one-dimensional theoretical framework, this study reveals that ion adsorption at the water-silica interface generates molecular-scale roughness and additional friction, significantly increasing apparent viscosity and governing ultra-confined ionic transport in wetting films.
This study combines experimental measurements with linear modeling to reveal that low-frequency coherent structures in separated turbulent flow over a Gaussian bump are driven by a three-dimensional zero-frequency modal instability and finite-span standing-wave dynamics, offering a physical explanation for discrepancies between simulations and experiments while highlighting the critical need for adequate spanwise domain sizes in numerical studies.
This paper demonstrates that aeroacoustic emissions from intense evaporation encode sub-millisecond physics-governed fingerprints of vapor-jet dynamics, enabling the development of a theoretical framework that accurately tracks transient cavity properties and identifies critical transitions in metallic additive manufacturing.
This study develops and validates a combined analytical and numerical framework linking thermal spray nozzle operating conditions to far-field aeroacoustic signatures and in-flight particle transport, demonstrating that acoustic monitoring can serve as a non-intrusive method for controlling and optimizing the thermal spray process.