Efficient hexahedral mesh generation for complex geometries using an improved set of refinement templates

Abstract

We proposed a new, easy-to-implement, easy-to-understand set of refinement templates in our previous paper to create geometry-adapted all-hexahedral meshes easily [Ito et al., "Octree-Based Reasonable-Quality Hexahedral Mesh Generation Using a New Set of Refinement Templates," International Journal for Numerical Methods in Engineering, Vol. 77, Issue 13, March 2009, pp. 1809-1833, DOI: 10.1002/nme.2470]. This paper offers an extension of the template set to refine concave domains more efficiently. In addition, two new options, temporal rotation and temporal local inflation, are introduced to create hexahedral meshes with fewer elements for long objects or objects with thin regions. Several examples are shown to discuss the improvements of the mesh generation method.