基于各向异性网格的激波/气泡的相互作用问题自适应求解

Solution of Shock Wave/bubble Interaction Problem Based on Anisotropic Mesh Adaptation

采用基于度量张量的各向异性网格自适应技术计算了激波与气泡相互作用形成的非定常流场。自适应网格能够很好地捕捉到流场的主要信息,并随时间进行网格调整,在流场变化剧烈的位置进行自适应加密。通过自适应网格与固定网格的网格量及结果对比,展示了网格自适应生成在网格规模同时提升求解精度上的优势。

In this paper,an anisotropic mesh adaptive technique based on metric tensor is used to calculate the unsteady flow field formed by the interaction between shock waves and bubbles.The adaptive mesh can well capture the main information of the flow field,adjust the mesh over time,and perform adaptive encryption at the location where the flow field changes dramatically.By comparing the mesh size and results of the adaptive mesh with the fixed mesh,the advantages of the adaptive mesh generation in improving the precision of the solution are demonstrated.