Page 236 - Basic Structured Grid Generation
P. 236
Unstructured grid generation 225
Fig. 8.51 Delaunay triangulation for two concentric circles, amax = 1.6, armax = 3.9.
Fig. 8.52 Delaunay triangulation for two semi-circles, amax = 1.0, armax = 4.0.
Fig. 8.53 Delaunay triangulation for two circles and one square, amax = 0.2, armax = 1.5.
we have
x P = x M − PM sin α
y P = y M + PM cos α. (8.35)
Figures 8.45–8.47 illustrate three stages of this program in operation as applied to
the region around an airfoil. More resulting triangulations for domains of various
geometries are shown in Figs 8.48–8.53.