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本文用DNS方法对两股空气的二维超声速混合流动 (Mc=0 .5 )的稳定性问题进行了计算模拟。通过对采集的流动参数在时空两个方面进行的分析 ,发现流动失稳后出现了间歇结构。有限差分计算采用了并行计算技术 ,在微机并行环境下可高效率地完成大规模计算任务。
In this paper, the DNS method is used to simulate the stability of two-dimensional supersonic mixed flow (Mc = 0.5). Through the analysis of the collected flow parameters in two aspects of space and time, it is found that the intermittent structure appears after the flow instability. Finite difference calculation using parallel computing technology, parallel computing environment can be completed efficiently in large-scale computing tasks.