摘要
本文利用Monte-Corlo方法模拟煤尘粒子在大气边界层中的扩散,在粒子运动方程中,计及了随机湍流、重力、气流Lagrangian自相关函数和Euterian自相关函数对粒子运动的作用,讨论了煤尘的非线性运动方程和线性运动方程的联合求解方法。在均匀各向同性湍流的条件下,获得线性方程的分析解。本文计算结果与实验较为一致。
The topics dealt with concern a random model of particle dispersion in the atmospheric boundary layer. Random turbulence velocity, gravity force, Lagrangian autocorrelation and Eulerian autocorrelation are all regarded as important elements in the model. This paper discusses the combination of the linear solution method with the nonlinear solution method, The calculation results are in agreement with the experimental data.
基金
国家自然科学基金
关键词
尘粒
边界层
数值模拟
扩散
particle dispersion
numerical simulation
