Page 223 - Basic Structured Grid Generation
P. 223
212 Basic Structured Grid Generation
Next, the side 1-9 is chosen. This leads to a procedure symmetrical to that involved
in the choice 10-3 above. The resulting updated front is shown in Fig. 8.32, and has
the properties:
• active nodes: 9, 10, 4, 5, 6, 7, 8
• active sides: 9-10, 10-4, 4-5, 5-6, 6-7, 7-8, 8-9
• passive nodes: 1, 2, 3
• passive sides: 8-1, 1-2, 2-3, 3-4
• npoints: 10
• nelem: 5
• nptr: 7
The next chosen side is 8-9. This time K ideal is found to lie outside the computational
domain (as shown in Fig. 8.33) and is rejected since a side of the new equilateral
triangle cuts the current face. Point 7 is chosen instead, giving the updated front shown
in Fig. 8.34 with properties:
5
6 4
10
3
7 2 3
4
9 2
1
5
8
1
Fig. 8.32 Sixth front.
5
6 4
10
3
7 2 3
K id 4
9 2
1
5
8
1
Fig. 8.33 Side 8-9; ideal point.
