Table of Contents
Introduction to ANSYS ICEM CFD ............................................................................................................... 1
General Meshing Workflow ..................................................................................................................... 1
Creating a Project ............................................................................................................................. 2
Creating or Importing the Geometry ................................................................................................. 3
Geometry Preparation ...................................................................................................................... 4
Parts ................................................................................................................................................ 4
Blocking the Geometry ..................................................................................................................... 4
Computing the Mesh ........................................................................................................................ 5
Checking/Editing the Mesh ............................................................................................................... 6
Describing the Physics ...................................................................................................................... 6
Generating the Input for the Solver ................................................................................................... 7
The ANSYS ICEM CFD User Interface ........................................................................................................ 7
Tetra Meshing ............................................................................................................................................. 9
Inputs to the Tetra Mesher .................................................................................................................... 10
Tetra Mesh Generation Steps ................................................................................................................ 11
Repairing the Geometry before Meshing ......................................................................................... 11
Repairing Holes in the Geometry .............................................................................................. 11
Closing Holes Bounded by Multiple Surfaces ....................................................................... 12
Closing Holes on Single Surfaces ......................................................................................... 12
Filling,Trimming, and Blending a Gap ........................................................................................ 13
Matching Curves ...................................................................................................................... 14
Specifying the Geometry Details ..................................................................................................... 15
Specifying Sizes on Surfaces and Curves .......................................................................................... 16
Specifying Meshing Behavior Inside Small Angles or in Small Gaps .................................................. 17
Choosing the Tetrahedral Mesh Method ................................................................................................ 17
The Octree Method ......................................................................................................................... 18
Computing the Tetra Mesh .................................................................................................................... 22
Prism Meshing .......................................................................................................................................... 23
Prism Mesh Process .............................................................................................................................. 23
Prism Mesh Preparation .................................................................................................................. 24
Choosing Prism Options ................................................................................................................. 24
Computing the Prism Mesh ............................................................................................................. 25
Smoothing a Hybrid Tetra/Prism Mesh ............................................................................................ 25
Hexa Meshing ........................................................................................................................................... 27
The Hexa Database ............................................................................................................................... 28
Hexa Mesh Generation with Blocking .................................................................................................... 29
Intelligent Geometry in Hexa ................................................................................................................ 29
Blocking Strategy ................................................................................................................................. 30
Hexa Block Types ............................................................................................................................ 32
Automatic Ogrid Generation ................................................................................................................. 33
Using the Automatic Ogrid ............................................................................................................. 33
Important Features of an Ogrid ....................................................................................................... 34
Edge Meshing Parameters ..................................................................................................................... 35
Smoothing Techniques ......................................................................................................................... 36
Refinement and Coarsening .................................................................................................................. 36
Making Parametric Changes to the Geometry ....................................................................................... 36
Parameterizing Edge Parameters ..................................................................................................... 37
Analyzing Rotating Machinery .............................................................................................................. 37
Determining the Pre-Mesh Quality ........................................................................................................ 37
Unstructured and Multi-block Structured Meshes .................................................................................. 38
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Release 18.1 - © ANSYS, Inc. All rights reserved. - Contains proprietary and confidential information
of ANSYS, Inc. and its subsidiaries and affiliates.
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