三维大钝头体简谐振动绕流的数值模拟  

NUMERICAL SIMULATION OF FLOW OVER A THREE DIMENSI0NAL BLUNTBODY WITH OSCILLATION

作　　者：李锋[1] 周伟江[1] 汪翼云[1] 

机构地区：[1]北京空气动力研究所

出　　处：《力学学报》1995年第4期477-481,共5页Chinese Journal of Theoretical and Applied Mechanics

摘　　要：用数值模拟方法研究了大钝头体外形（双子星座飞船）在超声速下俯仰振动的绕流特性，数值模拟的出发方程为三维全Ｎ－Ｓ方程，格式为二阶迎风ＴＶＤ格式，研究结果给出了物体在俯仰振动过程中激波、分离结构和物面压力分布等非定常特征。Flow field characteristics over an oscillating blunt body(Capsule-type vehicle)was investigated by numerical method.In this study,two second order implicit TVD(total variation diminishing scheme)scheme was used to solve full Navier-Stokes equations.The results have shown some very important information about flow over an oscillating blunt body,such as unsteady separation,shock and pressure distributions on the surface.

关 键 词：钝头体 非定常流 超声速 数值模拟 航天器 

分 类 号：V411.4[航空宇航科学与技术—航空宇航推进理论与工程]