1210 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 numerical study demonstrates that preferential concentration in turbulent iron particle combustion significantly extends total combustion time and reduces peak temperatures compared to uniform distributions, with the effect intensifying at higher equivalence ratios and Reynolds numbers due to macroscopic oxygen depletion zones and particle clustering.
This paper presents an analytical framework based on Alexeev hydrodynamic equations that successfully models turbulent channel flow by deriving kink-type solutions for streamwise velocity, which represent coherent streaks and unify the description of mean velocity profiles, secondary flows, and streak formation across a wide range of Reynolds numbers.
This study investigates the physical mechanisms of the droplet-to-ion transition in highly conducting electrosprays, revealing that ion emission originates from post-breakup droplets rather than the cone tip, and establishing a dissociation limit that defines the maximum specific impulse for electrospray thrusters.
This paper presents a high-fidelity, interface-resolved meso-scale simulation framework that integrates 5th-order WENO schemes, atomistic-scale grid resolution, and experimentally derived crystal geometries to accurately model shock initiation in plastic-bonded explosives and assess the impact of numerical and material modeling choices on matching experimental data.
This study investigates the interaction between a spark-generated cavitation bubble and an initially perturbed free surface, identifying distinct coalescence and non-coalescence regimes governed by the stand-off parameter and initial meniscus height, while establishing power-law scaling for cavity evolution and an analytical model to predict collapse intensity and pressure peaks.
This paper presents an analytical 2D model demonstrating that peristaltic pumping under poroelastic confinement is inhibited by viscous dissipation and elastic deformation, while permeability and interfacial slip interact with material stiffness to determine regimes of forward or backward interstitial flow.
This paper demonstrates that shear flows subjected to body forces can undergo a discontinuous transition to turbulence, challenging the established view that such transitions are always continuous by showing how the combination of supercritical and subcritical mechanisms suppresses laminar-turbulent coexistence and sharpens the transition.
This study demonstrates that heterogeneous swarms combining exploratory and exploitative agents outperform homogeneous groups in locating odor sources within 3-D turbulent environments by effectively mitigating signal spatial correlations, offering new insights for both biological collective behavior and bioinspired engineering algorithms.
This paper resolves the long-standing controversy over buoyancy closures in disperse two-phase flow by deriving a unique, approximation-free closure that correctly attributes all fluid stresses to the background flow (except Reynolds stress), thereby eliminating Hadamard instabilities and ensuring the linear well-posedness of two-fluid models.
This study unifies the impact dynamics of liquid drops and elastic beads by employing direct numerical simulations of a generic viscoelastic sphere to demonstrate how varying elasticity and relaxation time parameters continuously bridges the gap between Wagner's liquid theory and Hertz's solid theory, revealing a smooth transition through distinct force-scaling regimes.