Parallel Mesh Generation and Adaptation for Cad Geometries Parallel Mesh Generation and Adaptation for Cad Geometries

SUMMARY Large scale parallel simulations are dealing with meshes with millions to billions of elements. As the numbers of elements in these meshes continue to increase, it is becoming necessary to deal with the generation and control of the mesh in parallel. This paper overviews a set of procedures that can accept a CAD model as input and generate initial meshes in parallel with 100's of millions of elements. Adaptive control of the mesh is supported by parallel mesh modification procedures that can perform parallel anisotropic mesh adaptation, including maintaining boundary layer meshes, on meshes with billions of elements. These procedures have been integrated with multiple parallel finite element analysis codes to support the execution of large-scale simulations where all steps in the process are executed in parallel.