An Approach to Generate High Quality Unstructured Hybrid Meshes
Yasushi Ito, Alan M. Shih, Bharat Kumar Soni, Kazuhiro Nakahashi · 44th AIAA Aerospace Sciences Meeting and Exhibit · 2006
This paper describes the method to generate hybrid meshes comprised of triangular prisms, pyramids, hexahedra and tetrahedra for viscous computational fluid dynamics (CFD) simulations. Surface triangulation is performed using a direct advancing front method or a modified mesh-decimation method. From a surface mesh, a near-field mesh is generated using an advancing layer approach. To generate high quality meshes and to mesh around singular points, multiple marching directions are prepared from nodes on sharp convex corners. Tetrahedral meshing is then performed to fill the rest of the domain using an advancing front method. The hybrid mesh generation method is applied to several models to demonstrate its capability.