露天煤堆起尘及其运移扩散的模拟研究

摘要

On the basis of analyzing the strength state of the dust particle in the atmosphere,the theoretical research and numerical simulation were made by studying the arising and velocity trail of the dust which is on the surface of the dust source.The diffusion movement equation of group dust particle has been studied by using Lagrange method.This work offers scientific method which based on MATLAB for utilizing the computer to calculate the density of moving particle,so to simulate the movement of the dust,as well as the theoretical direction for appraising the pollution to the environment which caused by the open coal pile.%以堆煤场煤尘为对象,对粉尘颗粒在大气中的受力状况进行了分析,对开放性尘源表面的粉尘起尘及其在大气中扩散的运动进行了理论研究和数值模拟。利用Lagrange方法,研究了堆煤场煤尘颗粒群的扩散运动方程,并借助MATLAB语言,编制了环境中粉尘浓度的计算程序,对颗粒运动进行了模拟,为评价露天矿堆煤场对环境造成的污染提供了理论指导。