989 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.
The paper introduces \texttt{aPriori}, an open-source Python package designed to streamline the memory-efficient processing, analysis, and visualization of large-scale direct numerical simulation data for turbulent flows and combustion research, thereby lowering technical barriers and enhancing reproducibility within the computational fluid dynamics community.
This study investigates the evaporative cooling and deposition patterns of sessile nanofluid droplets on hydrophobic substrates, revealing that thermocapillary flow driven by evaporative cooling governs internal circulation and dictates the transition from unique polygonal networks to classical coffee-ring or dual-ring patterns as substrate temperature increases.
This paper introduces a unified framework for learning-based fluid dynamics that enforces exact incompressibility by integrating a differentiable spectral Leray projection for deterministic models and constructing a divergence-free Gaussian reference measure via curl-based pushforward for generative models, thereby eliminating spurious divergence and ensuring long-term physical stability.
This molecular dynamics study investigates the jumping behavior and energy conversion of merged droplets struck from above, establishing new scaling laws for spreading time, spreading factor, and restitution coefficients that depend on impact velocity, droplet size, surface texture, and wettability, particularly highlighting constant energy conversion efficiency at high velocities on superhydrophobic surfaces.
By reconciling ballistic interception and advective-diffusive capture models through theoretical analysis and numerical simulations, this study reveals that diffusion significantly enhances encounter rates between sinking marine snow and suspended particles even at high Péclet numbers, suggesting that key biological and physical processes like bacterial colonization and mass accretion occur much faster than previously estimated.
This paper demonstrates theoretically that the tangential interactions and friction-like behavior observed in suspensions of rough particles arise not from direct contact but from highly singular hydrodynamic forces generated by fluid flows between surface asperities, which effectively constrain particle rotation and translation in dense suspensions.
This study demonstrates that in evaporating respiratory droplets containing mucin, the formation of a protein-rich coffee ring is governed by a feedback loop between local solute concentration and evaporation rate mediated by water activity, a mechanism captured by a new theoretical model that explains the humidity-dependent stability and infectivity of such droplets.
This paper presents a design equation that leverages the non-ideality of polyisobutylene-based Boger fluids to systematically fabricate model viscoelastic fluids with precisely controlled shear moduli, relaxation times, and first normal stress difference coefficients by calculating the required polymer concentration, molecular weight, and solvent viscosity.
This study employs axisymmetric numerical simulations to investigate how impact velocity, fluid properties, and drop shape influence the coalescence dynamics of a liquid drop in a deep pool, revealing that prolate drops most readily form secondary droplets, that Rayleigh-Plateau instability is insignificant in this context, and that a transition regime with multiple neck oscillations exists between partial and complete coalescence.
This study demonstrates that seal whisker-inspired geometries enhance wake-induced vibration sensitivity by exhibiting lower fluid damping and greater amplitude response compared to elliptical cylinders, a behavior accurately captured by an amplitude-dependent Van der Pol damping model.