10/30/2014

ICEM CFD Introductory Course-Mesh Preparation and Output to Solver


Usage of Edit Mesh tools
To diagnose and fix any problems and improve mesh quality
To convert element types
Refine and/or coarsen mesh
Manual and automatic tools

For imported as well as internally created mesh
To diagnose mesh associativity problems
Errors – most likely to cause problems in:
Solver translation
Solver input
Solution convergence/run
Possible Problems – “Unclean surface mesh”
Unwanted elements
Unwanted holes/gaps
May result in incorrect solution 
Can check any combination of errors/possible problems at any one time
Individually select
Click on Error or Possible Problems tabs will select all options in column – selecting again will de-select all
Set Defaults will select most commonly seen/detrimental diagnostics
Check Mode
Create Subsets – creates a subset of elements that fit each criteria
Check/Fix Each – offers automatic fixing of indicated problem
Duplicate Elements
Elements that share all nodes with other elements of the same type
Uncovered Faces
Volumetric element faces that are neither attached to the face of another volumetric element nor to a surface element (boundary face)
Missing Internal Faces
Volumetric elements that are adjacent to another of a different part with no surface element between them
Periodic Problems
Inconsistency in the number of nodes/faces between periodic sides
Special check for rotating (sector) or translational periodic grids

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