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 study demonstrates that millimeter-sized particles trapped in a horizontal soap film experience an extremely long-ranged, non-reciprocal attraction caused by interface deformation, where the interaction force's magnitude and direction depend on the particles' positions relative to the film boundaries, leading to intricate orbital dynamics before collision.
This paper presents a novel physics-informed neural framework that accurately reconstructs unsteady fluid-structure interactions and structural deformations from sparse, off-body flow measurements without requiring a solid constitutive model or direct surface position data.
This study demonstrates that validated pore-resolved computational fluid dynamics (PRCFD) is essential for diagnosing surface-access limitations in catalytic porous monoliths, revealing that reactor performance is governed by topology-dependent surface accessibility rather than intrinsic kinetics, and showing that optimized structures like triply periodic minimal surfaces can reduce pumping power by an order of magnitude compared to random monoliths for the same production rate.
This paper utilizes the short-wavelength instability method to demonstrate that exact, upward-propagating nonlinear mountain waves in dry adiabatic flow become linearly unstable when wave steepness exceeds a critical threshold of 1/3, leading to chaotic three-dimensional motion within a specific layer beneath the tropopause.
This paper introduces HYMOR, an open-source MATLAB and Julia framework that enables global modal, non-modal, and receptivity analyses of high-enthalpy hypersonic flows by employing shock-fitting techniques and real-gas thermochemical models to capture complex physical interactions inaccessible to traditional local methods.
This paper presents an exact analytical solution and numerical simulations to characterize the hydrodynamic interactions and propulsion performance of two collinearly swimming squirmers in both Newtonian and shear-thinning fluids, revealing specific co-swimming configurations with identical velocities and establishing quantitative benchmarks for future many-body studies.
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 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 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.