In this study, a common used DSMC simulation program has been adopted and developed for studying general two- and three-dimensional rarefied gas flows.

• 关于直接模拟蒙地卡罗法，其主要的关键是：在一个足够小的时间步前提下，分子本来耦合在一起的运动与碰撞行为，得以分开处理；