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 paper demonstrates that a quasi-steady aerodynamic model, which predicts stroke-averaged forces without explicitly solving for flow fields, successfully captures key dynamic features of flapping locomotion—including the transition to propulsion and Strouhal number conservation—thereby extending the applicability of such models to regimes previously attributed to unsteady effects.
This paper reviews, critiques, and extends analytical and numerical results on the equilibrium shapes of closed-loop catenaries (string shooters) by analyzing the bifurcations and vertical-orientation challenges inherent in closing such loops under gravity and drag, while relating these findings to similar systems like lariats and heavy elastica.
This paper proposes a simplified phenomenological model that unifies the long-wave Darrieus-Landau and short-wave diffusive-thermal instabilities in premixed flames by introducing a cubic coupling term, revealing a distinguished crossover regime governed by a hydro-diffusive number that explains the emergence of chaotic, multi-scale flame front structures.
This study proposes a novel solid-based constitutive equation derived from a Zener-type viscoelastic element and nonlinear viscosity models that successfully predicts both steady and transient rheological behaviors of simple yield-stress fluids, including stress overshoot driven by normal stress differences rather than isotropic hardening.
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 study establishes a unified theoretical and experimental model demonstrating that soft hair beds under pressure-driven Poiseuille flow exhibit a universal inverse power-law response beyond a critical pressure, with angled configurations showing significantly higher resistance that can be leveraged to prevent backflow in medical applications like intravenous therapy.
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.
Using global high-resolution radiosonde data from 2014 to 2025, this study maps the spatial and temporal distribution of stratospheric turbulent diffusivity, revealing significant regional enhancements driven by mountain waves and convection, a potential aerosol injection zone near the tropical tropopause, and a notable increasing trend over the decade that could improve predictions of stratospheric plume dispersion.