Grid Generation Techniques

Abstract

AbstractThe grid generation (or mesh generation) process is a critical yet challenging step in the simulations that solve numerically nonlinear partial differential equations (PDEs) representative of fluid dynamics. It is often a tedious and labor‐intensive process when complex geometries are involved. There are many techniques in the grid generation process. In this chapter, concepts, strategies, algorithms, and software tools employed in the grid generation process are described. A brief outline of the grid generation process and adaptive grid generation is presented. Structured grid systems with Cartesian and curvilinear strategies and unstructured grid systems with quadtree/octree, Delaunay triangulation, advancing front, and advancing layers methods are summarized to provide readers with a clear overview of these important approaches. Software tools and literature sources for further information on grid generation techniques and applications are stated. In the final section, future trends in grid generation and technology vision are provided. Computational examples are presented throughout this chapter to demonstrate applications of grid strategies.