The improvement research of local reconstruction method at dynamic meshing technique

Delaunay triangle method is one of common used methods for generated unstructured grids. It is of higher effectiveness, but weaker ability for stationing points compared with Advancing Front Method. The local reconstruction method is essential for solving the problem involving geometric deformation and large displacements motion, while the reconstruction of grid will increase the computational workload. Aiming at how to define window boundaries of the local reconfiguration method, this paper proposes an improved method, which will improve the stationing ability of Delaunay triangle methods, avoid the tedious steps in extracting window boundary, and boost computational speed and assure the quality of the grid. With further study on guaranteeing mesh quality condition, this paper uses the dimensionless radius as program global variables, which increases the intelligent of program and reduces artificial intervention.