1229 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 presents a unified dipolar Poisson-Nernst-Planck-Stokes continuum theory that links hydrogen-bond network dynamics to viscoelectric stresses and electrostrictive pressure in water, successfully reproducing experimental measurements and identifying a microscopic mechanism for electrohydrodynamic flow.
This study integrates dipolar solvent physics, specifically dielectric saturation and the viscoelectric effect, into a Poisson-Nernst-Planck-Stokes framework to demonstrate that accounting for molecular solvent structure significantly alters transient nanoscale electroosmotic flows, potentially reducing electroosmotic mobility by up to 50% compared to standard continuum models.
This paper introduces the Reynolds-averaged vortex force map (RA-VFM) method, which extends vortex-force mapping to turbulent 3-D RANS flows by incorporating a Reynolds-stress contribution, thereby enabling accurate reconstruction and spatial attribution of mean lift and drag for complex geometries like a gliding goshawk where classical methods fail.
This paper investigates Taylor dispersion in pulsatile pipe flows where the scalar field influences fluid density and viscosity, deriving an effective one-dimensional unsteady mixing model through multiple scale analysis.
This paper derives first-principles hydrodynamic forces for spherical droplets in unsteady Stokes flows to demonstrate that neglecting the Basset-Boussinesq history force leads to significant errors, specifically overestimating droplet deflection amplitudes by more than 60% in horizontally shaken liquids, particularly for light particles and bubbles.
This paper demonstrates that increasing activity or reducing instability timescales in two-dimensional dense active suspensions drives a structural transition to a mixed state of locally polar-ordered regions and chaotic domains, characterized by intense vortices, giant number fluctuations, and universal statistical behavior unified by an energy-based order parameter.
This study demonstrates that dielectric-barrier discharge plasma actuators mounted on the A-pillars of a heavy-duty truck model effectively reduce aerodynamic drag by shrinking lateral separation bubbles, with leeward-side actuation proving most effective at mitigating drag and side forces under crosswind conditions.
This paper presents an extended kinetic theory model for incompressible turbulent flows that improves consistency with established turbulence theory, enables accurate simulation of wall-bounded flows through low-Reynolds number damping, and successfully captures non-Newtonian effects by demonstrating that averaged turbulent flows behave similarly to rarefied gas flows.
This paper demonstrates that spontaneous flow reversals in 2D active nematic turbulence are organized by a low-dimensional, symmetry-governed network of exact coherent structures and their invariant manifolds, which persist from the preturbulent regime into chaos to dictate the dynamics of flow switching.
This paper demonstrates that global geometric design of a wave field can directly control the motion of a localized, self-propelled walking droplet, enabling topological phenomena such as band-gap exclusion, edge-guided transport, and chirality-dependent orbital dynamics.