摘要
介绍一种三维自适应非结构网格的Euler方程求解技术。采用有限体积中心差分的格点格式对Euler方程进行空间离散,多步龙格-库塔时间推进,并采用当地时间步长、焓阻尼修正等加速收敛。采用Delaunay三角剖分技术生成三维流场的四面体网格。网格自适应技术中的网格局部加密也采用Delaunay三角剖分技术。最后用ONERAM6机翼的跨音速绕流计算说明本文方法的有效性。
The threedimensional Euler equations are solved on unstructured tetrahedral meshes using an adaptive strategy. The basic algorithm for the Euler solver consists of an explicit vertexbased finite volume method. The Delaunay triangulation is used both to generate the meshes and to refine the meshes. The transonic flow over the ONERA M6 wing is calculated by means of the adaptive strategy, and the results are compared with experimental data to show the accuracy and efficiency of the present method.
出处
《航空计算技术》
2002年第4期23-26,共4页
Aeronautical Computing Technique
