发展了一种基于非结构网格的自适应方法,对高超声速无粘流场进行了数值模拟。根据流场参数的变化梯度确定加密边,由加密准则进行自适应网格剖分后得到分布合理的较密网格。通过预先生成的初始极密表面网格将边界的加密点投影到边界上,使得边界保持初始外形。通过求解三维Euler方程,对三维双椭球高超声速绕流问题进行了数值模拟,计算结果和实验数据相吻合,表明了该文所建立方法的正确性和可靠性。 An adaptive method based on unstructured grid is developed to simulate the hypersonic viscous flow field. According to the change gradient of the flow field parameters, the encryption edge is determined. After the adaptive mesh is divided by the encryption criterion, a densely distributed grid with reasonable distribution is obtained. The encrypted points of the boundary are projected onto the boundary by a pre-generated initial dense surface mesh, so that the boundary maintains the initial shape. By solving the three-dimensional Euler equation, the numerical simulation of the hypersonic three-dimensional hypersonic flow around the two ellipsoids is carried out. The calculation results agree well with the experimental data, which shows the correctness and reliability of the proposed method.