1·Rarefaction effect on supersonic flow fields in the transition from near continuum to near free-molecule flow is analyzed numerically.
从近连续流到近自由分子流，计算分析超声速流场的稀薄效应。
2·Rarefaction effect tends to make supersonic flows move smoothly, and to enlarge the influence domain of cylinder.
稀薄效应趋于弱化激波等超声速流动结构，物体影响域增大。