Ignore Faces
The operation removes selected faces that are isolated or are located between two domains by ignoring them. Composite domains are formed which may simplify meshing the geometry, for example if narrow domain regions are avoided.
Figure 7-31: The Ignore faces operation removes the selected faces, highlighted in blue, to create one large domain. The resulting geometry has one composite domain after all the interior faces have been removed. To increase the visibility, one face of the upper part of the geometry has been hidden.
An alternative is to use the Form Composite Domains operation. The Remove Details operation provides a fully automated way to find and remove thin and small domains by ignoring faces.
To use the operation, in the Geometry toolbar, from the Virtual Operations menu (), select Ignore Faces (). Then enter the properties of the operation using the following sections:
Input
Select the faces that you want to ignore in the Graphics window. They then appear in the Faces to ignore list. If the geometry sequence includes user-defined selections above the Ignore Faces node, choose Manual to select faces, or choose one of the selection nodes from the list next to Faces to ignore.
Click the Active button to toggle between turning ON and OFF the Faces to ignore selections.
Use the Ignore adjacent vertices and edges check box to also remove the ignorable vertices and edges adjacent to the faces. Clearing the check box still removes the faces, but keeps the vertices and edges adjacent to the ignored faces, as shown below.
Figure 7-32: Faces selected to be ignored, highlighted in blue. One face is hidden to improve visibility. With the Ignore adjacent vertices and edges check box cleared, one composite domain is created, preserving the edges and vertices adjacent to the removed faces.
Mesh Control
Use the Keep input for mesh control check box to specify that the selected faces disappear from the geometry but become available when you build the mesh. You can, for example, use a mesh control face to partition the geometry to make it possible to sweep a hexahedral mesh. See also Mesh Control Faces.
With the Heat Transfer Module, see Shell-and-Tube Heat Exchanger: Application Library path Heat_Transfer_Module/Heat_Exchangers/shell_and_tube_heat_exchanger
With the Heat Transfer Module, see Thermal Bridges in Building Construction — 3D Iron Bar Through Insulation Layer: Application Library path Heat_Transfer_Module/Buildings_and_Constructions/thermal_bridge_3d_iron_bar
With the Mixer Module, see Centrifugal Pump: Application Library path Mixer_Module/Tutorials/centrifugal_pump