跨声速钝体绕流数值模拟研究  

Study of the Numerical Simulation for Transonic Flow Around a Blunt Body

作　　者：周伟江[1] 洪金森[1] 汪翼云[1] 

机构地区：[1]北京空气动力研究所

出　　处：《空气动力学学报》1999年第2期189-194,共6页Acta Aerodynamica Sinica

摘　　要：通过数值求解ＮＳ方程，进行了三方面工作：（１）格式和算法对返回舱跨声速流场特性的影响研究；（２）网格形态对捕捉跨声速弱激波的有效性研究；（３）模拟了无支杆和有支杆返回舱跨声速大攻角绕流流场，给出了后球体上的跨声速激波和后支杆上的第二道激波，及它们的干扰，流动现象和波系结构与实验观察一致，所用格式为ＮＮＤ格式和二阶迎风ＴＶＤ格式，隐式算法为ＬＵ－ＡＤＩ加最大特征值分裂算法。With solving NS equations,the following works have been done:(1)the study of the effect of scheme and algorithm on transonic flows over blunt body;(2)the study of effect of grid on capturing the transonic weak shock wave;(3)the transonic flows around an reentry capsule model with and without a support sting are simulated,the shocks on an aftbody and the sting and their interaction are presented,the phenomenon agrees with that observed from experiment.The NND and second order upwind TVD scheme and LU ADI algorithm are used.

关 键 词：跨声速流动 数值模拟 钝体绕流 

分 类 号：O354.2[理学—流体力学] V211.3[理学—力学]