The modular architecture with a common data backbone is ideally suited for extensions (see Figure 6.5). Two additional modules for initial grid generation have already been evaluated in an earlier version [117] [118].
Figure: Modules and data flow within VORONOI. The
shaded area represents the present status of VORONOI, other
modules are planned extensions.
The first module adds grid points to the point cloud according to a specified density function and the second module performs a relaxation of the point cloud, also controlled the grid density function. Both is done before the triangulation step, but this is only meaningful in case VORONOI is used as initial grid generation tool; it is not applicable for simulator coupling and grid/geometry conflict resolution.
The coarsening of an existing grid
is accomplished by measuring the quality of the final
triangular grid, by removing appropriate uncritical grid points
from the opint cloud (``Grid point deletion'' in Figure 6.5) and by
re-triangulating the remaining grid points.