尾喷流底部流场与外流场干扰的拓扑结构数值模拟  

The Numerical Simulation of Topological Structure in the

作　　者：郑忠华[1] 陈伟芳[1] 吴其芬[1] 

机构地区：[1]国防科技大学航天技术系

出　　处：《国防科技大学学报》1998年第3期18-22,共5页Journal of National University of Defense Technology

摘　　要：本文从非定常全ＮＳ方程出发，运用时间推进方法，采用有限体积方法离散控制方程，模拟了轴对称钝锥尾喷流场与外流场的干扰，得到了随时间发展的精细的流场拓扑结构，并对几种出口压力比的不同情况进行了比较和分析。The numerical calculation of the unsteady full NavierStokes equations by means of timemarching is discussed in this thesis.To simulate jet wake and main flowfield's diturbance of axisymmetric blunt body,the finite volume method is used in the governing equations.The numerical results of timemarching give some fine topological structure of near wake.In addtion we make comparison and analysis in some different ratioes of pressure.

关 键 词：拓扑结构 尾喷流场 外流场 干扰 数值模拟 

分 类 号：V211[航空宇航科学与技术—航空宇航推进理论与工程]