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.
The paper introduces HydroFirn, an efficient large-scale multidimensional numerical model for firn hydrology that overcomes the limitations of traditional one-dimensional approaches by simulating coupled unsaturated-saturated flows and dynamic ice layer formation, thereby improving the understanding of meltwater percolation and reducing uncertainties in sea-level rise estimates.
This paper presents three-dimensional direct numerical simulations of turbulent Rayleigh-Bénard convection in a rectangular box to demonstrate how a stable large-scale circulation fixes plume ejection regions, revealing that while local thermal and viscous dissipation rates and boundary layer thicknesses vary significantly with plume activity, the global heat transport laws remain consistent with other low-to-moderate aspect ratio configurations.
This paper proposes a data-driven framework that utilizes autoencoders and neural networks to construct a reduced-order oscillator model capable of accurately forecasting the long-term multi-frequency dynamics of high-dimensional turbulent flows, overcoming previous limitations in handling chaotic, multi-frequency characteristics.
This study numerically demonstrates that the length, shape, and stiffness of bicuspid valve leaflets critically determine their efficiency in preventing retrograde flow, explaining why shorter leaflets in abnormal or immature valves lead to reflux.
Contrary to the expectation that solute dispersion would weaken diffusiophoretic effects, this study demonstrates that the resulting diffuse solute fronts actually enhance the cumulative removal of colloids from dead-end pores by extending the duration of phoretic forcing, thereby validating the relevance of this mechanism for large-scale applications like filtration and remediation.
This paper proposes a multiple-scales framework for a manta ray-inspired "ricochet" washing machine filter that uses branched channels to divert fluid while bouncing microplastics back to a main filter, deriving an effective boundary condition and particle trajectory model to predict device efficiency without requiring extensive numerical simulations.
This paper reports the first experimental observation of passive Richtmyer-Meshkov instability freeze-out in a low-pressure regime, where additively manufactured sub-surface voids convert a single shock into a sequence of weaker shocks to suppress instability growth by over 70% through temporal shaping, offering a driver-independent strategy for controlling hydrodynamic instabilities in inertial confinement fusion.
This study utilizes large eddy simulations to demonstrate that in high-Reynolds-number turbulent Taylor-Couette flows, singularities in the Navier-Stokes equation induce pulsed zero shear stress in the core region, which inhibits radial energy transfer and causes small-scale vortices to accumulate energy, thereby driving a prominent inverse energy cascade.
This paper presents a novel, efficient time-domain method for evaluating second-order hydrodynamic loads on floating structures in fully nonlinear waves by reformulating force components to account for total nonlinear body motion and velocity, thereby overcoming the limitations of traditional first-order assumptions and demonstrating significant improvements in predicting the motions of moored ships.
This study employs high-order compact finite difference simulations to demonstrate that while the onset of viscous fingering in miscible slices is independent of boundary conditions, long-time solute mixing and instability growth are significantly enhanced by permeable boundaries, offering new insights for chromatography separation processes.