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 study benchmarks several statistical turbulence models against direct numerical simulations for cloud-edge mixing, revealing that while all models successfully capture thermodynamic evolution, they vary in their ability to accurately represent changes in cloud microphysics.
This study demonstrates that a gravity-driven glider can achieve precise navigation in viscous fluids by dynamically adjusting its center of mass, employing distinct optimal strategies—rapid tumbling to generate inertial lift at high Reynolds numbers and steady inclined settling to utilize viscous forces at low Reynolds numbers—identified through direct numerical simulations and reinforcement learning.
This paper derives a scaling law for the slow flow dynamics of an unstable mechanical system coupled to a nonlinear energy sink by reducing the system to a saddle-node bifurcation normal form, thereby improving the theoretical prediction of the NES mitigation limit and validating the approach with an aeroelastic wing model.
Using direct numerical simulations of rotating spherical shells, this study demonstrates that semi-convection in planetary interiors spontaneously organizes into density staircases that evolve into a convective layer overlain by a stably stratified layer, a configuration capable of generating dipolar magnetic fields consistent with Saturn's observed field.
This paper presents a total-Lagrangian vectorial lattice Boltzmann method using a D2Q4 stencil and six-component vector populations to simulate two-dimensional finite-strain hyperelastic dynamics by formulating the governing equations as a conservative first-order system that separates kinematics from constitutive closure while preserving the standard collide-stream structure.
This study presents a physics-based vibroacoustic framework to predict and compare the operational underwater noise emissions of 10 MW bottom-fixed and floating offshore wind turbines, revealing that floating configurations generate higher low-frequency sound levels and more complex, direction-dependent radiation patterns than monopile structures, while water depth significantly influences overall propagation and sound levels.
This study utilizes high-fidelity simulations of compressible flow past a rotating cylinder to identify a critical bifurcation near Re=5650 and demonstrates that artificial neural networks outperform traditional regression methods as accurate, efficient surrogate models for predicting complex aerodynamic loads and reconstructing flow behaviors across a wide range of Reynolds numbers.
This study quantifies the previously elusive flux coefficient governing liquid exchange between a vertical soap film and its bounding meniscus by combining experiments, simulations, and theory to analyze how plate insertion drives meniscus growth across steady and transient regimes.
This paper proposes a quantum-mechanical model of Newtonian cosmology where zero-point motion resolves classical singularities and, in the presence of a small positive cosmological constant, describes a metastable universe that evolves through gestation, rapid tunneling expansion, and slower Hubble expansion, closely mirroring modern inflationary scenarios.
This study uses numerical simulations to demonstrate that aerodynamic wings on a leading motorcycle generate turbulent wakes and coherent vortices that independently and significantly destabilize a pursuing motorcycle by altering lift and wheelie tendencies, suggesting that competition governing bodies should consider banning such downforce-generating appendices to improve safety.