1169 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 unified scaling laws for mean wall shear stress and velocity profiles in turbulent boundary layers across diverse flow regimes, including separation and reattachment, by using an information-theoretic approach to identify that local dimensionless variables alone can implicitly encode upstream history without requiring global parameters.
This paper presents a robust and efficient hybrid overlapping moving-mesh technique integrated within the unified gas-kinetic scheme (UGKS) to accurately simulate unsteady multiscale flows with moving boundaries, such as hypersonic multi-body separation and MEMS flows, by extending implicit solvers to mitigate CFL constraints and optimize computational performance.
This paper presents a theoretical model describing how laser-heated nanoparticles in viscous fluids generate acoustic waves through coupled thermophone and mechanophone mechanisms, revealing that fluid viscosity and interfacial thermal resistance critically govern the frequency-dependent transition between these effects and the resulting acoustic attenuation for theranostic applications.
This study identifies six distinct concentration regimes in salt-free aqueous xanthan solutions by demonstrating that power-law dependencies of specific viscosity on concentration persist across the entire shear-rate range, thereby extending traditional equilibrium scaling laws to finite shear rates to better understand shear-induced interaction mechanisms.
This study demonstrates through experiments and simulations that dynamic two-phase flow in porous media induces chaotic mixing via exponential fluid stretching, significantly enhancing solute mixing compared to steady single-phase flows by balancing shear deformation with flow reorientation at an optimal rate.
This paper presents an analytical study using singular perturbation and WKB approximation to derive a finger selection mechanism for Saffman-Taylor fingers in tapered Hele-Shaw cells, demonstrating that the gap gradient significantly influences finger width and can be used to stabilize or destabilize fingering instabilities.
This paper demonstrates that defect-embedded phononic subsurfaces, when coupled with wall-bounded turbulent flows via a weakly coupled framework, can passively filter and reorganize turbulent energy to suppress velocity fluctuations and reduce drag through a unique frequency-selective interaction that shifts the system's dominant oscillation away from its designed resonance.
This study employs direct numerical simulations to reveal that secondary droplets generated by high-speed raindrop impacts on a liquid pool follow a universal size distribution scaling law of and are significantly influenced by the formation and breakup of a central liquid film, which modulates droplet capture and re-merging dynamics.
This study introduces a new vertically-elongated Lagrangian tracking model to demonstrate that turbulent wind fluctuations accelerate warm-cloud droplet growth and precipitation onset by enhancing both autoconversion and accretion processes compared to non-turbulent conditions.
This paper develops a unified boundary-layer framework and validates it with simulations to quantify magnetohydrodynamic drag on an oscillating sphere in a rotating cavity, addressing the coupled effects of magnetic fields, rotation, and viscosity relevant to planetary interiors and icy moons.