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 numerically and experimentally investigates fluid flow through periodic square-bar packed beds, revealing that the rotation angle between modules fundamentally alters flow regimes and friction factors, while a proposed module-equivalent diameter successfully collapses the data onto the Ergun correlation for accurate permeability predictions.
This paper proposes a continuous-time Koopman autoencoder that utilizes a parameter-conditioned linear generator to enable exact, non-autoregressive latent evolution via matrix exponentiation, thereby achieving a superior trade-off between computational efficiency, long-horizon stability, and short-term accuracy for fluid dynamics forecasting.
This paper introduces a method using the approximation error of compact Sinusoidal Representation Networks (SIRENs) as a regularity diagnostic for the 3D Navier-Stokes equations, successfully detecting singularity localization in Taylor-Green vortex simulations and identifying a critical viscosity threshold for blowup signatures in axisymmetric flows.
This paper presents a hybrid quantum-classical solver that integrates the Harrow-Hassidim-Lloyd (HHL) algorithm with Chebyshev-based approximate quantum state tomography to efficiently solve the incompressible Navier-Stokes equations, successfully validating the approach through accurate simulations of lid-driven cavity and Taylor-Green vortex flows using IBM's Qiskit framework.
Using parallel superposition rheometry to account for residual slip, this study demonstrates that microgels and emulsions exhibit bounded, periodic strain responses below their yield point, providing compelling evidence that their sub-yield behavior is governed by nonlinear viscoelasticity rather than plastic flow.
This study develops a comprehensive mathematical model incorporating corneal surface roughness, slip, van der Waals forces, and lipid transport to demonstrate that increased surface roughness significantly destabilizes the tear film and accelerates rupture, offering a more realistic framework for understanding ocular health and addressing issues like contact lens failure.
By combining experiments and theoretical analysis, this study reveals that drop shape critically influences impact force by over an order of magnitude and establishes a universal cylinder model to accurately predict impact dynamics across diverse drop profiles.
This paper presents and validates a reduced-order streamwise periodic turbulent flow solver implemented in the open-source SU2 CFD suite, demonstrating its ability to accurately and efficiently simulate the thermo-hydraulic performance of heat exchangers with repeating structures, such as offset circular fins, by significantly reducing computational costs compared to full array simulations.
This study employs finite element modeling and Lagrangian coherent structure analysis via finite-time Lyapunov exponents to characterize complex cerebrospinal fluid flow in human and zebrafish brain ventricles, revealing that while Stokes equations suffice for calculating stroke volumes, Navier-Stokes equations are necessary to resolve intricate advective transport features.
This study introduces a novel OH-PLIF-based experimental method to directly measure the stretch factor in laminar premixed hydrogen-air flames, revealing how thermodiffusive instabilities increase flame consumption speed and cause the stretch factor to decrease monotonically as the equivalence ratio increases.