1262 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 reviews and extends a perturbative theoretical framework to explain how self-organized turbulence forms large-scale condensates in various systems, including two-dimensional and rotating three-dimensional flows, by demonstrating the universal role of two conserved quantities and the transition between different asymptotic models based on interaction scales.
This paper presents a unified, physics-constrained neural-operator framework that accelerates Direct Simulation Monte Carlo simulations by replacing the Variable Hard Sphere model with a stochastic neural collision kernel for improved generalization and by introducing an efficient surrogate for ab initio Jäger potentials, collectively achieving high-fidelity predictions of rarefied gas dynamics with reduced computational cost.
This paper demonstrates that a two-dimensional fluid of hard disks with chiral, energy- and momentum-conserving collisions obeys the H-theorem despite breaking time-reversal symmetry, and derives analytical expressions for its transport coefficients via Chapman-Enskog expansion that are validated by molecular dynamics simulations.
This study utilizes CFD simulations on 76 patient-specific cerebral aneurysms to demonstrate that local luminal curvature is a primary determinant of hemodynamic environments, where saddle-like patches correlate with high wall shear stress and spherical-like patches with low shear stress, offering a geometric framework for improved risk stratification and intervention planning.
Through high-resolution three-dimensional simulations, this study demonstrates that unstable magnetic reconnection in magnetised jets can self-sustainfully transition into fully developed turbulence via a current-sheet instability, where the coupling between turbulent electromotive force and magnetic mean shear drives persistent energy injection and subsequent nonlinear cascades.
This paper demonstrates that the Senftleben-Beenakker effect in a diatomic gas under a magnetic field induces anisotropic odd viscosities that generate distinct hydrodynamic forces on oblate and prolate spheroids, enabling their separation during sedimentation.
This paper extends out-of-time-ordered correlators (OTOCs) to turbulent fields by deriving a semiclassical limit for the Hasegawa-Mima equation that quantifies information scrambling via Lie-Poisson brackets, revealing that strong zonal flows induce an algebraic suppression of non-zonal perturbations through rapid shearing.
This study demonstrates that varying the actuation frequency of a time-dependent magnetic field in an evaporating ferrofluid droplet controls the deposition morphology by inducing a transition from coffee-ring formation to multi-ring patterns and finally to central deposition, a process governed by the competition between magnetic forcing, capillary flow, and particle diffusion.
Through three-dimensional direct numerical simulations, this study reveals that while the global mean temperature in internally heated convection is largely insensitive to the Prandtl number and controlled by the top boundary layer, the Prandtl number critically dictates the behavior of the lower stable region and the efficiency of rotational cooling via Ekman pumping.
This study extends the front propagation formulation combustion model to large eddy simulation of swirl-stabilized turbulent premixed flames by incorporating non-adiabatic effects and improved sub-filter flame speed estimation, demonstrating that accurately resolving flame thickness is critical for capturing vortical stretching-induced flame pockets and secondary temperature peaks in the TECFLAM burner.