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.
By decoupling the spanwise Stokes layer thickness from the forcing period through the addition of a body force, this study demonstrates that optimal turbulent drag reduction and net energy saving are achieved with substantially smaller periods and larger layer thicknesses than those of classical wall oscillations, revealing that wall oscillation is a suboptimal actuation method.
This paper introduces a fast spectral formulation of Multiscale Proper Orthogonal Decomposition (mPOD) that replaces time-domain filters with compact spectral masks to decouple frequency bands and reduce computational cost by orders of magnitude while maintaining accuracy in recovering modal structures.
This paper proposes a refined criterion for chemically driven convection, demonstrating that while mean molecular weight inversions above the red giant branch bump are insufficient to sustain mixing, rapid carbon production during the helium core flash could trigger a steady convective region that significantly alters our understanding of this stellar event.
This paper presents a continuous algebraic derivation of the Euler ensemble as the universal attractor of decaying fluid turbulence by reformulating the Navier-Stokes equation as a covariant derivative flow and applying Feynman's operational calculus to map non-commutative operator algebra to roots of unity, thereby demonstrating that macroscopic fluid chaos is a deterministic projection of the Farey sequence without relying on spatial lattice approximations.
This paper utilizes pseudo-differential operators in conformal variables to analytically derive and numerically validate the criteria and normal forms for four recurrent types of modulational stability bifurcations that occur as the steepness of deep-water Stokes waves increases toward the highest wave limit.
This paper proposes a self-similar stability framework that accounts for diffusive base-state expansion, revealing how competing "expansion wind" and diminishing viscosity effects extend the lifespan of Kelvin-Helmholtz instability in rapidly diffusing shear layers beyond classical predictions.
This study employs Direct Numerical Simulation to investigate heat transport in liquid metal duct flows under transverse magnetic fields with varying wall conductivities and buoyancy forces, identifying four distinct flow regimes and evaluating their Nusselt numbers to assess heat transfer capabilities for future fusion reactor blankets.
This study demonstrates that equatorial Kelvin waves in a differentially rotating spherical shell can become unstable under specific conditions of differential rotation and viscosity, suggesting they may play a key role in triggering the episodic mass ejection events observed in Be stars.
This paper proposes a Bayesian-enhanced Galerkin-POD framework that reformulates model coefficient correction as a statistical inverse problem to systematically address uncertainties from mode truncation and data noise, thereby significantly improving the stability, robustness, and predictive accuracy of reduced-order models for unsteady compressible flows.