激波作用下三维涡的形成及其界面捕捉计算

Simulation to Vorticity Generated by a Shock Wave and Interface Capturing

针对三维多介质可压缩流体,给出了可压缩多介质流体三维高精度数值计算方法,以及界面捕捉方程和带重新初始化的三维LevelSet方法,对初始压力间断和密度间断条件形成激波、接触间断以及稀疏波的三维复杂流场相互作用情况进行数值计算,给出流场中涡的形成过程和界面位置。并对计算方法进行理论验证。

High-resolution numerical method for the 3D compressible multi-fluid is proposed,and the interface capturing method and 3D Level Set method with re-initialization are verified simultaneously. Combining these methods,3D complex multi-fluid glow interactions,ameng shock wave,contact discontinuity as well as rarefaction are numerically simulated. In case of the initial pressure and density discontinuity,the shape of vortex and the corresponding interfaces are presented.