Monte-Carlo Simulation Methods for Finite Flat Plate Winding Flows

摘要

This article opts for the use of direct simulation Monte-Carlo methods to solvesuch problems as those associated with winding flows around flat plates of finite length. The methods in question are ones which go through tracking the movements of simulated molecules by computer in order to realize numerical value simulations. Collision calculations between simulated molecules are determined from statistical samplings. As far as collision models are concerned, respective selections were made for the use of hard sphere molecule models and inverse power law models. As far as simulation molecule and solid wall effects are concerned, option was made for the use of models which are made up from mixtures on the basis of ratios of fully diffused reflection and specular or mirror surface reflection. For the sake of the reliability of empirical test methods, calculations were also done of the one dimensional flow movements associated with such questions and Rayleigh problems and shock wave structures. Two dimensional calculations opted for the use of synchronous parallel programs. Numerical value results clearly showed that direct simulation Monte-Carlo methods were capable of relatively good simulations of a number of problems in rarefied gas mechanics. As far as two dimensional calculations are concerned, the machine time expended and the necessary content are both within ranges permitted by domestic machines. (AN).