数值研究激波与旋涡的相互作用

NUMERICAL STUDY ON THE INTERACTION BETWEEN A SHOCK WAVE AND A VORTEX

从非定常形式的Euler方程出发,数值模拟了运动激波与旋涡相互作用的非定常流动过程。为保证激波具有较高的分辨率,采用对称型TVD格式进行了数值计算。结果表明。这样可以有效地模拟流场中一些复杂的流动现象,如激波变形、激波分叉和三波点的形成,以及旋涡结构的变化过程等,并与已有的实验流动显示相符良好。同时,也是对TVD格式求解这类问题的一次初步尝试。

A numerical study of two-dimensional shock vortex interaction is discussed in this paper. A high resolution symmetric TVD scheme is used to capture the shock wave for solving the Euler equations in conservation form. In the present study, some complicated flow phenomena, such as shock deformation, shock branching, and the formation of secondary shock and triple points etc., are effectively simulated. The computed results are in good agreement with experimental work.