M=2.5时MVG控制流分离拓扑的数值与实验研究
Numerical and Experimental Studies on the Separation Topology of the MVG Controlled Flow at M=2.5
摘要：
本文采用隐式大涡模拟方法和五阶带宽优化WENO格式，对M=2.5，Reθ=5760的MVG控制流的分离拓扑进行了全面的研究。最后通过实验对计算结果进行了验证。分析了三种拓扑结构：表面分离、横截面分离和涡的三维结构。得到了分离拓扑的完整描述和一系列新的发现。其中，一对螺旋点是第一次通过计算预测和实验验证。本文还提出了相应的七涡管涡模型。
英文摘要：
In this paper, the implicitly implemented LES method and fifth order bandwidth optimized WENO scheme are used to make comprehensive studies on the separation topology of the MVG controlled flow at M=2.5 and Reθ=5760. Experiments are also made to verify the prediction of the computation. Analyses are conducted on three categories of the topology: the surface separation, cross-section separation and the three dimensional structure of the vortices. A complete description about the separation topology and a series of new findings are obtained. Among them, a pair of spiral point is first predicted by the computation and verified by the experiment. A corresponding new vortex model with 7 vortex tubes is presented also.
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