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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