Transfinite subdivision unstructured grid generation for arbitrary 2D domain

摘要

In this article, we propose a hybrid approach to quickly generate a dense grid on any two-dimensional geometrical domain. In the approach, we first apply an unstructured mesher to generate an initial coarse mesh. After performing post-processing procedure to enhance the grid quality on the initial coarse grid, a transfinite method is used to locally subdivide each quadrilateral or triangular cell into many geometrically similar cells. The resulting grid is a structured-like unstructured mesh. The proposed method is simple, efficient and universal for any two-dimensional geometrical domain. Numerical examples are shown to illustrate the advantages of the hybrid approach.