Stochastic models can be used to approach the motion of a singular particle in the fluid, however, it is hardly expected to elucidate the mechanism of the interaction among the solid particles.
随机模型能用于研究流动中单个颗粒的运动，但很难解释固体颗粒之间相互作用的机制。
2
With the particle collision taken into account, the interaction of plasma with a fixed wall is studied by using a two-fluid model.