再入体过渡区气动特性预测  

Research on Aerodynamic Characteristics of Re-entry Figure in Transition Domain

作　　者：陈伟芳[1] 王全利[1] 吴雄[1] 

机构地区：[1]国防科技大学航天与材料工程学院,湖南长沙410073

出　　处：《国防科技大学学报》2004年第1期5-7,共3页Journal of National University of Defense Technology

基　　金：国家自然科学基金资助项目(19902021)

摘　　要：采用DSMC(DirectSimulationMonte Carlo)方法模拟球双锥复杂外形过渡区流动。给出了近连续区的温度与压强分布图,以及在不同Knudsen数、不同马赫数条件下球双锥表面压强系数和阻力系数的分布,并将阻力系数模拟结果与桥函数一体化估算结果进行了比较分析。The transitional flow over a complicated sphere-bicone figure was simulated by DSMC method. The isotherm and pressure contour were shown in the near-continuum region and the drag coefficient and the pressure coefficient distribution curves of the surface were also presented at different Knudsen numbers and different Mach numbers. Comparison analysis of the drag coefficient was carried out between simulated results and approximation data estimated by the bridging-function formula.

关 键 词：DSMC方法 桥函数 过渡区流动 飞行器 气动力特性 数值模拟 阻力系数 

分 类 号：V211.25[航空宇航科学与技术—航空宇航推进理论与工程]