An optimum finite element automatic grid generator for electromagnetic field computations

摘要

An automatic two-dimensional finite-element (FE) grid generator that greatly assists in improving preprocessing operations and geometry handling for electromagnetic field computations is described. The algorithm triangulates a set of points defining a field region into optimal finite-element meshes. The mesh generator uses an approach proved to be user-friendly and efficient, especially in the analysis of medical devices. This is because instead of the node-insertion techniques used in most grid generators, the user gives dimensions and characteristics of each subregion in the large region to be analyzed. Furthermore, it is possible to add, delete, or modify a region configuration and grid without gross effort.