10/31/2014

ICEM CFD Introductory Course-Shell Meshing

Usages of shell meshing:
Thin sheet solid modeling (FEA) – stamped parts
2D cross sectional analysis (CFD)
Input for volume meshing (FEA/CFD) – Delaunay, Advancing Front, T-grid
Filling a surface mesh is faster than tetra octree but requires well-connected geometry
  Procedure
First need to decide mesh setup parameters
Mesh method
Algorithm used to create mesh
Mesh type
quad/tri/mix
Mesh sizes
Small enough to capture physics, important features
Large enough to reduce grid size (number of elements)
Memory limitations
Faster mesh/solver run
Set mesh sizes on parts, surfaces, and/or curves
Based on edge length

Can have different  types/methods set on different surfaces

Surface Mesh Setup
Same parameters as part mesh setup but also includes:
Mesh type
Mesh method
Select surfaces first from screen, set sizes/parameters and Apply
Mesh method/type will override global shell mesh settings for selected surface(s)
Will override Part Mesh Setup settings if set afterward
Display
Right mouse, select in Model tree on Surfaces > Tetra/Hexa Sizes
Icon appears for each surface
Gives you a visual estimate of prescribed max. size
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