跨音速细长体三维分离的数值研究

NUMERICAL INVESTIGATION OF THREEDIMENSIONAL SEPARATED FLOWS ABOUT A HEMISPHERECYLINDER

本文数值模拟了半球柱在跨音速、中等攻角时的粘性层流绕流，研究了流场中的复杂三维分离形态结构，其中包含流向与横向的主分离、二次分离、以及激波边界层的相互干扰，解释了在球柱接合部精确捕获的压力波动与流动主分离、二次分离的影响关系，这个现象是前人的计算［５，６］未捕捉到的。

A numerical investigation of threedimensional separated flows about a hemispherecylinder is presented.The analysis has been restricted to transonic and laminar flows.Results are given for the complex flow field structures including shock,boundary layer,separated flow,vertical flow and their mutual effects.The topological structures of the separated flow is shown.