云滴增长建模中连续方法与随机方法的比较
大气与海洋物理
2020-06-11 v1 流体动力学
摘要
本文建立并比较了两种云滴增长模型。针对 20-50 微米的滴增长,采用收集核的多项式近似对连续吸积模型进行数值求解,结果表明该模型低估了增长率。同时实现了用于随机增长的蒙特卡洛模拟,以展示离散滴增长过程。该方法模拟了随着滴尺寸增大,捕获平均时间间隔减小的效应。研究发现,随机模型能给出更现实的增长率,尤其是对于较大尺寸的液滴。结论表明,随机模型显示出更快的液滴累积速度,从而缩短了滴增长所需时间。
引用
@article{arxiv.1309.1682,
title = {A Comparison of Continuous and Stochastic Methods for Modeling Rain Drop Growth in Clouds},
author = {Rehan Siddiqui and Brendan M. Quine},
journal= {arXiv preprint arXiv:1309.1682},
year = {2020}
}
备注
10 pages and 6 figures with good Model Sensitivity: To check the sensitivity of the model to the capture probability, average growth-times Tavg (q) were computed for 100 values of q in the range [0.01, 1.0]