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 paper establishes a differential geometric framework demonstrating that particle trajectories in the Stokesian regime are geodesics of a conformally scaled metric, where the scaling factor is the local power dissipation, thereby reconciling the discrepancy between physical paths and the geodesics of the pure hydrodynamic resistance metric.
This paper presents a perturbation-based frequency-response framework that unifies linear resolvent analysis and nonlinear interactions to explain how oblique-wave forcing generates and reinforces streamwise streaks, ultimately linking these mechanisms to the onset of secondary instability and subcritical transition in wall-bounded shear flows.
This paper numerically demonstrates that a three-dimensional contractile fluid droplet exhibits diverse motile regimes in bulk, ranging from spherical to peanut-like shapes, and displays a novel oscillating dynamics characterized by periodic wall collisions when confined within a microchannel.
The paper introduces SCALE-TRACK, an open-source, asynchronous Euler-Lagrange particle tracking algorithm designed for heterogeneous exascale architectures that achieves unprecedented scalability by successfully simulating up to 256 billion particles across 256 GPUs while maintaining accuracy and efficiency.
This paper presents the first application of the Stochastic Advection by Lie Transport (SALT) framework to an idealized coupled ocean-atmosphere model, where replacing standard white noise with Ornstein–Uhlenbeck processes to capture temporal memory in unresolved subgrid transport yields stochastic ensemble forecasts that outperform deterministic counterparts in probabilistic skill despite higher root mean square error.
This paper establishes the existence of explicit, smooth, and stable finite-time blow-up solutions for a D system derived from the 2D inviscid Boussinesq equations by reformulating the problem with new variables, constructing exact solutions on specific ridge rays, and proving their nonlinear stability in high-regularity weighted Sobolev norms.
The paper proposes the Dual-Scale Neural Operator (DSO), a novel architecture that decouples local feature extraction and global trend aggregation to effectively address the long-term stability and precision challenges in fluid dynamics forecasting, achieving state-of-the-art results with over 88% error reduction compared to existing methods.
This study utilizes CFD simulations with wall-modeled large eddy simulation to demonstrate that an impeller-driven intra-aortic pump outperforms single and triplet pump designs by achieving superior pressure head, hydraulic efficiency, and hemocompatibility, as evidenced by lower NIH values and a Hemolytic Number consistently below 1.
This paper demonstrates that reconfigurable kirigami sheets can reversibly transform into 3D porous meso-architectures under flow to actively modulate and partially decouple lift and drag forces, with their aerodynamic behavior governed by structural stiffness and the Cauchy number.
This study investigates the vertical penetration dynamics of rigid rods, flexible rods, and granular jets into a 2D low-density granular bed, revealing that all three projectile types deviate from their initial vertical alignment due to bed inhomogeneities and torque, eventually settling into a horizontal configuration, with flexible rods buckling and granular jets penetrating significantly less than their rigid counterparts.