ICEM+Grid+Generation

=ICEMCFD Grid Generation Strategy= 1. Create initial block and roughly subdivide into multi-block grid topology 2. Associate block entities to geometry entities; 3. Assign properties to block edges; 4. Check grid quality; 5. Export grid to file 6. Post process grid file outside of ICEMCFD;
 * Block vertices to geometry points
 * Block edges to geometry curves
 * Block faces to geometry surfaces
 * Number of nodes
 * Nodal distribution
 * "determinant check" tool
 * Visual inspection with "scan planes" tool
 * Force nodes on symmetry plan to have y=0 with "symmetry" script
 * Create grid connectivity file with "create_connect" script
 * Create grid information file with "grid_info" script

=ICEM Grid Generation Tutorials=

There is a huge pdf containing many tutorials for ICEM CFD version 11. A copy can be found here:

/nfs/carv/d1/people/comp-aero/ICEMCFD_tutorial/icemtutorial_v11.pdf

As of Oct 2011, the CFD lab is using ICEM CFD version 13 but the version 11 tutorials are still useful. Of interest to our group is Section 4.2 on hexa meshing. The tutorials refer to ICEM input files that can be found here:

/nfs/carv/d1/people/comp-aero/ICEMCFD_tutorial/Tutorial_Files

=ICEM Tips and Tricks=

ICEM has some quirks that make some tasks difficult without knowing the right trick to get the job done. Here are a few tricks that might be helpful:

Splitting a Block Through a Prescribed Point
ICEM wants to put the split through the point closest to the selected block edge, even though that may not be the point you selected. The trick here is to rotate the view such that the selected block edge is closest to the point where you want the split.