1214 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 the weak formulation of sparse nonlinear identification (WSINDy) offers a robust, data-driven framework for accurately discovering and predicting the governing equations of vortex-induced vibrations, outperforming traditional models and standard SINDy in handling aperiodic dynamics.
By combining large-scale lattice Boltzmann simulations with an analytical model, this study reveals that fractal trees in urban environments undergo a drag-crisis transition at high Reynolds numbers that is smoothed by structural complexity and shifted to lower speeds by atmospheric turbulence, challenging the assumption that pruning always reduces aerodynamic loading.
The paper introduces SIMR-NO, a hierarchical neural operator framework that combines deterministic interpolation with spectrally gated Fourier corrections and local refinement to achieve physically consistent, high-fidelity super-resolution of turbulent flow fields from extremely coarse observations, significantly outperforming existing deep learning and interpolation methods in both accuracy and spectral preservation.
This paper introduces a generalized eigenvalue problem-based linear stability analysis framework that efficiently and accurately predicts intrinsic laminar flame instabilities directly from 1D base flames, achieving results comparable to direct numerical simulations with a computational cost reduction of eight orders of magnitude.
This study presents the first direct high-speed optical observations of individual particle motion within a natural powder snow avalanche, revealing distinct flow phases, quantifying turbulence and shear instabilities, and providing critical empirical data to refine numerical models of multiphase gravity currents.
This study combines experiments, theory, and simulations to demonstrate that while inertia does not fundamentally alter the flow configuration near a moving contact line, it induces systematic deviations in streamfunction contours and interfacial speed profiles that existing inertial theories fail to fully capture at higher Reynolds numbers, highlighting the need for more sophisticated models.
This study demonstrates that additively manufactured, optimized perforated acoustic black hole dampers serve as a robust, broadband passive solution for effectively mitigating thermoacoustic instabilities in hydrogen-fueled combustors across various operating conditions.
This study utilizes detailed 2D simulations to reveal how gravity-induced Rayleigh-Taylor instability influences lean hydrogen/air flames, establishing a universal scaling law for linear growth rates and demonstrating that gravity simultaneously inhibits small-scale cellular splitting via baroclinic torque while promoting large-scale finger-like structures to enhance global consumption speed.
This paper rigorously analyzes the global regularity of 3D incompressible Navier-Stokes equations by deriving a fundamental critical condition, , based on mechanical energy transport that characterizes the transition from laminar to turbulent flow and potential finite-time singularities.
By combining analytical modeling, lattice Boltzmann simulations, and X-ray experiments, this study elucidates the critical Bond number and confinement-dependent mechanisms governing bubble clogging, unclogging, and coalescence in highly porous media relevant to electrochemical devices.