1011 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 experimentally validates an extended sharp-interface continuum thermodynamic model that quantitatively describes how non-ionic surfactants reduce mass transfer from rising gas bubbles by accounting for both Marangoni-induced hydrodynamic changes and the previously unmodeled mass transfer resistance caused by surfactant adsorption.
This study demonstrates that strong magnetic field gradients in post-merger environments can significantly suppress or slow the magneto-rotational instability (MRI), limiting its ability to amplify poloidal magnetic fields to only specific regions and late times ( ms) after a binary neutron star merger.
This paper presents a machine learning framework that infers accurate, concentration-dependent non-Newtonian rheological models from discrete element method simulations, enabling efficient and precise large-scale Lagrangian sea ice modeling that captures complex behaviors like shear-thinning and shear-thickening across varying ice concentrations.
This study reveals that while macroscopic rheological properties in shear-thinning dense non-Brownian suspensions depend on specific particle interactions, the underlying particle-scale transport dynamics are universally governed by the imposed shear rate and nonaffine velocity fluctuations, leading to a strain-controlled ballistic-to-diffusive crossover that decouples microscopic kinematics from macroscopic stress.
This study proposes a hybrid reduced-order modeling framework for turbulent flows on collocated grids that combines a consistent flux "discretize-then-project" strategy for mass and momentum conservation with an LSTM-based data-driven closure to accurately reconstruct turbulent viscosity, achieving superior performance in capturing transient dynamics compared to other neural network architectures.
This study employs the reciprocal theorem to demonstrate that inertial effects in dilute suspensions of buoyant droplets at low Reynolds numbers introduce quadratic dependencies on relative velocity and velocity variance into the interphase drag force and effective stress of the continuous phase.
Direct numerical simulations reveal that the instability of a charged non-conducting liquid surface in a normal electric field evolves through two distinct stages, where initial dimples transform into expanding bubbles that grow larger with increasing field strength, even as the dominant instability mode's scale decreases.
This study employs three-dimensional numerical simulations and linear stability analysis to reveal how non-spherical droplet morphology critically influences crown evolution and splash regimes, demonstrating that oblate drops promote finger fragmentation via enhanced rim deceleration while prolate drops favor canopy formation, with the resulting finger count being governed primarily by Rayleigh-Plateau instability and amplified by Rayleigh-Taylor instability.
This paper presents a new thermodynamic-based theory for modeling compressible and immiscible fluids with arbitrarily high density ratios, addressing the limitations of traditional Navier-Stokes and Euler equations by deriving density evolution equations that properly account for true momentum evolution.
This paper presents a novel fourth-order entropy-stable extension of the Navier-Stokes-Fourier equations for rarefied gases, derived via a new variational multiscale moment closure of the Boltzmann equation that demonstrates remarkable accuracy in the transition regime and beyond when validated against linearized Boltzmann solutions.