Use Mesh control domains for precise control of the mesh in specific regions of the geometry, without affecting the geometry used for assigning physics.
To fully resolve the gradients in a field in certain regions of a domain, a finer mesh may be required. One way to avoid refining the mesh in the entire domain, is to partition it, then assign a finer mesh size to the domain created by the partitioning, as shown in Figure 7-35. By designating the created domain as a
mesh control domain, it will only be visible in mesh mode, and only before the mesh is generated. As soon as the mesh is built inside the mesh control domains and adjacent domains, the faces and edges adjacent to the mesh control domains are removed.
The operation removes the selected domains by composing them with adjacent domains as shown in Figure 7-35 and
Figure 7-36. The faces (3D only) and edges become available when you build the mesh. This makes it possible to partition a domain to prepare it for swept meshing, or to control the mesh size in a specific region, without modifying the geometry that appears when assigning physics settings.
To use the operation, in the Geometry toolbar, from the
Virtual Operations menu (
), select
Mesh Control Domains (
). Then enter the properties of the operation using the following sections:
Select the domains that you want to use for mesh control in the Graphics window. They then appear in the Domains to include list. If the geometry sequence includes user-defined selections above the
Mesh Control Domains node, choose
Manual to select domains, or choose one of the selection nodes from the list next to
Domains to include.
Click the Active button to toggle between turning ON and OFF the
Domains to include selections.
