复杂地形机械湍流扩散的粒子随机行走模拟

A Random Walk Simulation of Particle Displacements for Mechanical Turbulent Diffusion in Complex Terrain

应用粒子随机行走模拟方法模拟了高架点源在中性情况下在复杂地形上的排放，并将模拟结果与风洞实验进行了比较，二者能较好地吻合。虽然将该方法用于复杂地形大气扩散计算在技术上不存在什么困难，但是在确定模式基本参数等方面，还应该慎重考虑。

Random walk simulation has been used to simulate the emission from an elevated point source in complex terrain in neutral condition. The comparisons of results obtained from this model with those from wind tunnel test indicate that they were well consistent. Although there are no difficulties from a technical point of view in applying random walk methods to complex terrain,some problems egarding the model parameters still have to be considered more carefully.