Matlab codes for the DSMC calculation of Couette flow, using the variable-hard-sphere (VHS) collision model

摘要

This report gives codes for the DSMC method for two collision models: the constant hard-sphere and the variable hard-sphere. The codes are written in arbitrary units (or non-dimensional form). The relationship between such a code and the conventional dimensional form in the standard text (Bird, 1994) is explained. The codes are set up for plane 1D Couette flow for a gas with a ratio of specify heats = 5/3. Some results for velocity and temperature profiles are given for Knudsen numbers of 0.01 and 0.05.