动态间断装配法模拟斜激波壁面反射

发布时间：2018-05-11 19:40

本文选题：激波 + 非结构动网格　；参考：《航空学报》2016年03期

【摘要】：基于非结构动网格技术和边界装配思想提出了动态间断装配法,该方法能够应用于求解含有间断的流动问题。无论入射激波还是反射激波都是作为边界进行处理,激波运动速度由兰金-许贡纽(Rankine-Hugoniot)关系确定。激波作为动网格的一部分,其运动由动网格技术实现。采用该方法模拟了超声速二维流场中激波与壁面相交问题,并且与捕捉法进行比较,二者的流场结构符合良好,但是在细节上还是存在明显差异。通过对流动结构的分析,得出采用装配方法得到的流场要优于捕捉方法的结论。激波壁面反射的问题模拟,也说明了边界激波装配方法对于复杂的激波相交问题是具有处理能力的。
[Abstract]:A dynamic discontinuous assembly method is proposed based on the unstructured dynamic mesh technique and the idea of boundary assembly. This method can be applied to solve the flow problem with discontinuity. The shock velocity is determined by the Rankine-Hugoniotot relation of Rankine-Hugoniotot, whether the incident shock wave or the reflected shock wave is treated as the boundary. As a part of moving grid, shock wave motion is realized by moving grid technology. The method is used to simulate the intersection of shock wave and wall surface in supersonic two-dimensional flow field. Compared with the capture method, the flow field structure of the two methods is in good agreement, but there are obvious differences in detail. Through the analysis of the flow structure, it is concluded that the flow field obtained by the assembly method is superior to the capture method. The simulation of shock wave wall reflection also shows that the boundary shock assembly method has the ability to deal with the complex shock wave intersection problem.
【作者单位】：大连理工大学航空航天学院;
【分类号】：O354.5

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