摘要
采用DSMC(DirectSimulationMonte -Carlo)方法模拟三维球头过渡区流动。给出了球头绕流流场的温度与压力分布图 ,以及在不同Knudsen数、不同马赫数条件下球头表面压力系数分布曲线 ,并将阻力系数模拟结果与桥函数公式进行了比较分析。
The transitional flow over a sphere is simulated by DSMC method. The isotherm and pressure vector are shown and the pressure coefficient distribution curves of the sphere surface are also presented at different Knudsen numbers and different Mach numbers. Comparison analysis of the drag coefficient is carried out at last between simulated results and approximation data estimated by the bridging-function formula.
基金
国家自然科学基金资助项目 (批准号 :1990 2 0 2 1)
