1250 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 introduces an SVGP-KAN framework that reconstructs time-resolved flow fields from sparse velocimetry data with accuracy comparable to classical methods while providing well-calibrated epistemic uncertainty estimates to guide experimental design.
This paper presents a mathematical proof demonstrating that the spatial symmetry of two-dimensional Kolmogorov flow solutions is preserved for all time, thereby validating clean numerical simulation (CNS) results while exposing the rapid symmetry-breaking artifacts caused by numerical noise in direct numerical simulation (DNS).
This paper employs a suite of global models, including resolvent and harmonic resolvent analyses, to demonstrate that triadic and nonlinear interactions between the screech mode and other flow fluctuations are critical for explaining energy redistribution and accurately predicting the complex dynamics of screeching jets.
This paper presents large-scale experimental findings on Lagrangian tracer dispersion in stratified turbulence, revealing that vertical motion is constrained by the ratio of velocity fluctuation to buoyancy frequency, while velocity spectra exhibit a distinct decay and a transition from Gaussian to non-Gaussian statistics as the flow shifts from wave-dominated to fully nonlinear turbulent regimes.
Contrary to the conventional expectation that electrowetting promotes droplet spreading, this study reveals that applying DC voltage to specific microtextured, lubricant-infused surfaces in a Cassie wetting state induces rapid tangential droplet ejection due to unbalanced electrocapillary forces and minimal pinning, offering a new paradigm for controlled droplet transport.
This paper demonstrates that while unconstrained and symmetry-preserving data-driven neural networks both outperform classical large-eddy simulation closures in accuracy, enforcing physical symmetries is crucial for generating more physically consistent velocity-gradient statistics and improving the overall quality of the learned closure.
Using particle tracking velocimetry with frozen deuterium tracers, this study presents evidence of anomalously long-lived vortex rings with multiquantum circulation in superfluid helium-4, challenging the standard paradigm that such vortices rapidly split into singly quantized filaments.
This paper establishes the existence and conditional energetic stability of rotating wave solutions for two-dimensional capillary liquid drops with constant vorticity by utilizing a Hamiltonian framework, bifurcation theory, and critical point theory.
This paper identifies and characterizes two previously elusive families of core-bound excitations (varicose and fluting waves) on Gross-Pitaevskii vortices, detailing their dispersion relations across different wavelength limits and proposing a spectroscopic protocol for their experimental detection.
This paper presents a revised, energy-conserving theoretical model for the attenuation of long waves through regions of irregular floating ice and random bathymetry, which corrects previous over-predictions by utilizing ensemble averaging of transfer matrix eigenvalues and successfully reproduces key features of field data, including frequency-dependent attenuation rates and high-frequency roll-over effects.