967 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 demonstrates that, contrary to previous findings in other geometries, surfactant solubility enhances surfactant-induced flow in air-liquid-air films by an order of magnitude, a phenomenon explained by a single parameter comparing depletion length to film thickness and validated by asymptotic theory.
This paper proposes an explainable multi-agent deep reinforcement learning framework that leverages SHAP-guided rewards to discover a highly energy-efficient control strategy for turbulent drag reduction, achieving a 34.44% drag reduction and 34.01% net energy saving with minimal actuation cost by activating pressure-gated controls in sync with near-wall turbulent structures.
By combining synchrotron X-ray imaging and Raman spectroscopy, this study reveals that polyvinyl alcohol regulates the freezing of water droplets by inducing heterogeneous polymer segregation, which slows the freezing front, suppresses bubble entrapment, and blunts the characteristic tip singularity.
This paper demonstrates that while anti-Fourier heat flux in rarefied cavities serves as a physical validation target, it does not certify the full fourth-order closure state of the R26-level hierarchy because the observable in-plane flux is insensitive to significant variations in scalar excess and out-of-plane tensor components that satisfy fundamental positivity constraints.
This paper proposes a Synchronized Donor-Region of Momentum fluxes (SynDRoM) framework combined with a viscosity limiter to enhance the numerical robustness and physical fidelity of sharp-interface simulations for energetic multiphase flows with large density and viscosity ratios.
This study reveals that residual Earth's gravity induces a Stewartson layer which, upon interacting with the viscous boundary layer in supergravitational centrifugal convection, triggers a transition to turbulent flow and the ultimate heat transport regime at lower Rayleigh numbers.
This paper introduces a cost-effective methodology for simulating high-Reynolds-number spatially evolving wakes by utilizing Spectral Proper Orthogonal Decomposition (SPOD) to reconstruct physically meaningful inflow conditions from lower-Reynolds-number body-inclusive simulations, thereby achieving accurate flow predictions with over an order-of-magnitude reduction in computational cost.
This paper presents a variational quantum algorithm implemented on Qiskit to solve the one-dimensional diffusion problem with space-dependent diffusivity, demonstrating its ability to model hydroxide ion exchange in alkaline electrolyzer membranes and identifying that significant chemical instability arises only when the diffusivity ratio between membrane layers exceeds approximately 50.
This study utilizes delayed detached eddy simulations and unsteady pressure-sensitive paint measurements to characterize the buffet dynamics induced by ultrahigh-bypass-ratio nacelle installation on the Airbus XRF-1, revealing that dominant shock oscillations in the range originate near the pylon-wing intersection and propagate inboard, driven by unsteady flow separation and shear layer instabilities.
This paper presents a practical workflow that integrates a neural network trained on experimental rheometry data as a viscosity closure within a Cahn–Hilliard–Navier–Stokes finite element solver, successfully validating the approach by accurately simulating the rise dynamics and shapes of non-Newtonian silicone inks without requiring solver modifications.