Triangular mesh generation using knowledge base for three-dimensional boundary element method

The authors propose a method of triangular mesh generation using a knowledge base for three-dimensional boundary-element methods. To ensure a flexible and expandable mesh generator, the kernel of the mesh generator is coded in Lisp rather than in a procedural language and the knowledge base of the mesh generator is separated from the execution module. The procedure for the mesh generation is decided by rules in the knowledge base and the meshing pattern of the computation model is selected by the input data. This means that a goal is given by the input data and the meshing is done by using the rules in the knowledge base in order to achieve the goal. A data structure of the surfaces and boundary elements suitable for a Lisp system is proposed that makes it easy to treat the complex data structure in meshing processes