An optimization based multi-block-structured grid generation method

Abstract

A new optimization based meshing technique for block-structured meshes is presented. Given a topological block partition, block sizes, and distance constraints, meshes are generated automatically. The optimization effort is limited by using a BSpline based intermediate layer with reduced degrees of freedom, making it suitable for high resolution meshes. The optimization itself minimizes approximated grid criteria defined in the intermediate layer domain. Sampling the intermediate layer results in a mesh, which is projected in order to preserve geometric constraints. The capability of the new method is shown for 2D and 3D geometries.