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在激波捕捉法计算得到的流场基础上采用辨识算法得到初始间断位置,从ALE方程出发,考虑离散几何守恒律,采用变形网格和网格重构技术解决计算过程中间断运动和变形,新旧网格之间流场采用高精度信息传递方法保持时间精度,建立了基于非结构动网格技术的间断装配方法.通过激波管问题的二维模拟,模拟了初始间断分解为激波和接触间断激波遇到固壁反射后与接触间断相交的非定常流动过程,对这种新方法的基本原理进行了介绍.
Based on the flow field calculated by the shock capture method, the initial discontinuity position is obtained by using the identification algorithm. From the ALE equation, the discrete geometry conservation law is considered, and the deformation grid and grid reconstruction technique are used to solve the discontinuous movement and deformation in the calculation process. The flow field between the old grid and the old grid adopts the high accuracy information transmission method to maintain the time precision and establishes an intermittent assembly method based on the unstructured moving grid technology. Through the two-dimensional simulation of the shock tube problem, The basic principle of this new method is introduced when the contact shock wave encounters the unsteady flow of solid-wall reflection which intersects the contact discontinuity.