Three-dimensional Automatic FEM Mesh Generation for Full-wave Electromagnetic Simulations

Full-wave electromagnetic simulations of real-life engineering modes need the mesh generation with all fine features of the objects and truncated free-space regions. Simple geometrical models can be easily handled by commonly used commercial software, like Ansys, HyperMesh, COMSOL, et. al. However, real-life models, like aircraft systems, electronic systems and antenna systems, always contain tens of thousands of geometrical entities. Thus, it will be extremely difficult and tedious to generate a mesh of the entire model manually. To avoid manual operation in meshing, in this letter, we propose an automatic FEM mesh generation workflow for complex full-wave electromagnetic simulations. In the workflow, we construct the free-space model, compute the mesh size distribution according to the geometrical feature and generate mesh based on mesh size distribution automatically. It has been applied to numbers of real-life simulations, which verifies the validity of the workflow.