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 presents a novel data-driven framework that combines diffusion maps with deterministic particle methods to describe and quantify scalar mixing in fluid flows directly from tracer trajectories, addressing a gap in existing Lagrangian approaches that focus primarily on detecting coherent structures rather than quantifying mixing.
This paper proposes a non-intrusive, physics-informed spatio-temporal surrogate modeling framework that leverages Koopman autoencoders to accelerate engineering design by efficiently predicting complex dynamical system behaviors, such as fluid flow around a cylinder, while ensuring generalizability beyond the training data distribution.
This paper demonstrates that tensor invariants of velocity and magnetic field gradients serve as quantifiable proxies and bounds for specific energy flux mechanisms in magnetohydrodynamic turbulence, a relationship validated through 3D simulations of freely decaying flows.
This study characterizes the deformation and instability of sessile soap bubbles in a parallel-plate electric field, revealing a stable spheroidal regime governed by a single steady-state branch that transitions into a conical instability with a half-angle of approximately 30 degrees, followed by pre-jet dynamics well-described by an inertia-capillary model.
This study employs a systematic computational search using variational optimization to identify initial conditions that maximize norms relevant to the Ladyzhenskaya-Prodi-Serrin regularity criteria, revealing that while extreme 3D Navier-Stokes flows exhibit growth rates consistent with finite-time singularity formation, they ultimately fail to sustain this growth long enough to actually become singular.
This paper proposes and validates an improved third-order scheme for pseudopotential lattice Boltzmann models that effectively suppresses spurious velocity oscillations at phase interfaces without adding computational complexity, thereby ensuring more reliable simulations of multiphase flows.
This study demonstrates that horizontal oscillation of the bottom plate in Rayleigh-Bénard convection can enhance heat transport by over 60% by synchronizing large-scale circulation reversals with the wall oscillation period through a robust phase-locking mechanism that optimizes plume transport across a wide range of Rayleigh numbers.
This paper investigates the orientation dynamics of a settling spheroid in simple shear flow, revealing that the interplay between Jeffery and inertial torques leads to a saddle-node bifurcation on an invariant circle governing the transition to steady equilibrium, while stochastic analysis demonstrates that noise induces Kramers-type phase slips with rates exponentially sensitive to the Péclet number.
By integrating microfluidic experiments, numerical simulations, and theoretical modeling, this study demonstrates that diffusiophoresis driven by ubiquitous chemical gradients significantly alters colloid dispersion and transit times in porous media, necessitating a revision of classical transport models to improve predictive capabilities for applications like drug delivery and environmental remediation.
This paper presents a scalable method for generating tunable, monodisperse micro-scale emulsions by applying horizontal vibration to a rectangular container with stratified immiscible liquids, which excites ordered Faraday waves that break into regular droplet arrays whose critical breakup acceleration and size are governed by the container width, forcing frequency, and viscosity ratio.