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

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.