The generation of the mesh is the most critical step for obtaining adequate results in the simulations. One of the most efficient ways to achieve a good quality mesh by minimizing the number of elements in the domain is by using the CCM+ Extruder Mesh. The following is a summary of the steps to generate an extruded mesh
First you must have at least one meshed part as a base to develop the extrusion, this implies that the part is already assigned to a region and preferably already has the border types assigned.
Select the surface to be used as a base for the extrusion: Geometry>Operations>(RC) New>Surface preparation>Surface extruder. This operation creates a new part called “Surface Extruder”. Define the height of the extrusion in “Extrusion Distance”.
Assign the new part to an existing region: Geometry>Parts>Surface Extruder>(RC) Set Region (to the region used as the base for extrusion).
Assign a volume meshing operation to the part that was generated with the Surface Extruder: Geometry>Parts>Surface Extruder>(RC) Create Mesh Operation>Mesh>Volume Extruder. Define the number of layers and the “stretch” factor. Execute.
Update the interfaces as contacts: Geometry>Parts>(RC) Update Interfaces>Update Contact-Mode Interfaces.
Initialize the newly created interfaces: Interfaces>(RC) Initialize.
This completes the generation of the extrusion. Remember that the extruded mesh is a parametric operation that can be updated as required.