Lagrangian supersaturation fluctuations at the cloud edge
Fluid Dynamics
2023-12-21 v1 Atmospheric and Oceanic Physics
Abstract
Evaporation of cloud droplets accelerates when turbulence mixes dry air into the cloud, affecting droplet-size distributions in atmospheric clouds, combustion sprays, and jets of exhaled droplets. The challenge is to model local correlations between droplet numbers, sizes, and supersaturation, which determine supersaturation fluctuations along droplet paths (Lagrangian fluctuations). We derived a statistical model that accounts for these correlations. Its predictions are in quantitative agreement with results of direct numerical simulations, and it explains the key mechanisms at play.
Cite
@article{arxiv.2309.03055,
title = {Lagrangian supersaturation fluctuations at the cloud edge},
author = {J. Fries and G. Sardina and G. Svensson and A. Pumir and B. Mehlig},
journal= {arXiv preprint arXiv:2309.03055},
year = {2023}
}
Comments
6 pages, 3 figures, supplemental material