Résultats pour « physics.flu-dyn »

Prépublication · 2026 arXiv EN

Transient growth and Counter-propagating Rossby Waves in a sloped Eady problem

A mechanistic interpretation for baroclinic normal mode instability with exponential growth is the interaction arising from Counter-propagating Rossby Waves (CRWs), where pairs of CRWs phase-lock and interfere constructively. On the other hand, an arbitrary in...

J. Yin, N. Harnik et al. #physics.flu-dyn

Prépublication · 2026 arXiv EN

Hurricane Laura-induced loads on wind turbines -- Part I: High-fidelity modeling and sensitivity to turbulent inflow conditions

Tropical cyclones can produce extreme winds in the lowest portion of the boundary layer, posing high risks to critical energy infrastructure, including wind energy systems. This study evaluates the dynamic response of an idling wind turbine to turbulent inflow...

Miguel Sanchez-Gomez, Lucas Carmo et al. #physics.flu-dyn

Prépublication · 2026 arXiv EN

Some generalizations of the tornado model

A possible mechanism of tornado generation is associated with the Schwarzschild criterion for convective instability. The supercooled cloud-air mixture near the axis starts to descend and, due to the super adiabatic temperature gradient, the overheated near-su...

S. N. Artekha #physics.flu-dyn

Prépublication · 2026 arXiv EN

Preferential concentration of cloud droplets: Coupled effects of phase change and gravitational settling

Cloud droplets respond to turbulent motion with finite inertia and settle under gravity, while condensation and evaporation change their sizes. The nonuniform accumulation of cloud droplets in turbulent flows, known as preferential concentration, has attracted...

Zi-Mo Liao #physics.flu-dyn

Prépublication · 2026 arXiv EN

Planar intrusions from a narrow, jet-like source in a linearly stratified ambient

We present two and three dimensional direct numerical simulations of planar intrusions injected from a continuously supplied, narrow source into a linearly stratified ambient at the level of neutral buoyancy. The evolution passes through three phases. A lamina...

Hai Duc Vu, Murray Rudman et al. #physics.flu-dyn

Prépublication · 2026 arXiv EN

Conditional Flow Matching for Generation of 3D Multi-variable Instantaneous Urban Microclimate Fields

Rapid and accurate prediction of urban wind and temperature fields is important for urban microclimate design and climate adaptation. Large-eddy simulation (LES) effectively resolves these instantaneous fields, but its application is limited in iterative desig...

Peng Liu, Shaoxiang Qin et al. #physics.flu-dyn