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 study presents the first experimental demonstration of shock-induced tipping in a thermoacoustic Rijke tube, showing how an abrupt increase in heating power drives the system from a quiescent state to self-sustained oscillations by shifting the grid temperature into the basin of attraction of a limit cycle.
This paper demonstrates that spatially extended heavy particles, modeled as rigid dumbbells, can become trapped in a stable spinning state at the center of a vortex through nonlocal flow sampling, a phenomenon that fundamentally alters transport dynamics compared to the centrifugal expulsion predicted by traditional point-particle approximations.
This paper presents a minimal mechanical model of pump foil propulsion that explains how periodic leg pumping converts vertical oscillations into sustained forward motion, revealing that the front wing primarily generates lift while the rear wing is essential for pitch stability.
Using high-speed imaging and controlled experiments, this study demonstrates that while rolling friction dominates the early motion of a spinning disk, viscous air drag is the primary mechanism driving the finite-time singularity as the disk comes to rest.
This paper investigates mixing and enhanced dissipation in a time-translating shear flow by establishing that moderate translation speeds yield decay rates interpolating between stationary and monotone flow limits through refined stationary phase analysis and an adapted hypocoercivity framework, while rapid translation ultimately suppresses mixing by averaging out advection.
This paper rigorously proves the existence of an energy cascade in free-shear three-dimensional incompressible viscous flows by deriving energy-budget relations and demonstrating that energy flux occurs between the Corrsin and Kolmogorov scales under specific conditions involving ensemble averages and stationary statistical solutions.
This paper resolves the unbounded wave energy issue in the limit of linear Kelvin wave theory by introducing a modified kernel with elliptic spanwise integration and a fast contour-deformation evaluator, enabling physically consistent and computationally efficient predictions for flat-ship applications.
This paper proposes a novel convolutional autoencoder neural ODE (CAE-NODE) framework that successfully constructs a highly compressed, physically consistent latent manifold to accurately predict the full transient dynamics of 2D counterflow flames, including ignition and propagation, with relative errors below 2%.
This paper resolves a conceptual inconsistency in large eddy simulations by proposing a direct approximation of the filtered advection term via a truncated infinite series expansion, which eliminates the need for artificial stabilization and yields improved kinetic energy spectra and velocity correlations compared to classical methods.
This paper numerically and theoretically compares continuously stratified and bilayer models for oceanic flows, proving convergence to bilayer equations for near-piecewise constant profiles while demonstrating via normal mode analysis that Kelvin-Helmholtz instabilities in shear flows fundamentally limit the validity of widely used bilayer Euler and shallow-water models.