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 introduces DiffSRDA, a computationally efficient, uncertainty-aware data assimilation framework based on denoising diffusion models that generates high-resolution ensemble analyses from low-resolution forecasts and sparse observations, achieving performance comparable to high-cost methods while supporting training-free adaptation to changing sensor layouts.
This paper presents a unified viscoelastic-viscoplastic continuum framework for granular flows that establishes a direct link between the coefficient of restitution and continuum viscosity to model rate-dependent behavior while preserving the classical plastic flow rule, implemented via the material point method to simulate complex transient processes.
This paper demonstrates that surface waves in a draining-bathtub vortex serve as a unified hydrodynamic analogue for both Aharonov-Bohm phase shifts and Lense-Thirring frame dragging, with experimental validation confirming that circulation-induced flow generates topological phase holonomies and rotating nodal patterns analogous to gauge and gravitational effects.
This paper presents a meshless -adaptive numerical method for simulating non-Newtonian natural convection in a differentially heated cavity, demonstrating that dynamically adjusting node density based on shear-thinning flow characteristics significantly enhances computational efficiency while accurately capturing sharp boundary layer structures.
This paper investigates gas injection into curved, water-saturated porous channels modeling underground storage, deriving asymptotic evolution equations that reveal how axisymmetry and channel slope drive distinct buoyancy-influenced dynamics and five temporal spreading regimes, ultimately offering insights for enhancing the safety and efficiency of subsurface hydrogen and CO storage.
This paper generalizes polyropic stellar wind models to include more realistic non-adiabatic behavior under strongly localized heating, demonstrating that the required energy is plausible and offering potential explanations for variable wind streams and acoustic waves observed by the Parker Solar Probe.
This study demonstrates that in dilute polydisperse colloidal rod suspensions, the orientation relaxation time following flow cessation is not a fixed material constant but is flow-history-dependent, systematically decreasing with higher pre-shear rates as the dominant relaxing sub-population shifts from longer to shorter rods.
This paper introduces a renormalization-group-based reduction method that efficiently derives explicit Hopf amplitude equations and slow-manifold approximations for nonlinear aeroelastic systems, offering a compact and parameter-aware framework for constructing local reduced-order models near flutter.
This paper derives three new asymptotic models for collision-free plasmas in magnetic fields, establishes their well-posedness in Sobolev spaces, and demonstrates the existence of wave-breaking solutions for a unidirectional model related to the Fornberg-Whitham equation.
This study identifies spanwise-localised "arrowhead" travelling waves as the fundamental building blocks of elastic turbulence in rectilinear, sheared polymer flows, revealing how their interactions and splitting events drive chaotic dynamics while noting that the resulting flow remains a poor mixer due to small cross-shear and spanwise velocities.