Using the
Assign Parts to Regions dialog, you can map geometry objects to their corresponding region objects in preparation for simulation. The dialog supports several workflows, some of which are documented elsewhere.
The dialog is split into two main sections. The
top section shows all the current parts in the simulation. The bottom section
contains all the options for setting the regions, boundaries and interfaces.
| Region options
|
- Create a
Region for Each Part
- Based on
the chosen parts, this option creates a region for each
part.
- Assign All
Parts to an Existing Region
- Activates
an object selection dialog in single-select mode. This
option does not appear if no regions exist in the
simulation.
- Create One
Region for All Parts
- Default
option. This option assigns the selected parts to one
region. You can edit the name of the target region in
the adjacent text box.
The following region topology options are available when the
Create One Region for All Parts option is selected.
- Volume
Topology
- Default region topology. This option assigns
the selected parts to a volume region, that is, regions
with a volume mesh.
- Surface
Topology
- This option assigns the selected parts to a
surface region that represents the domain for a
Smoothed-Particle Hydrodynamics (SPH) multiphase
simulation where only the surface mesh is required for
the analysis.
|
| Boundary Options
|
- Create One Boundary for Each Part Surface
- For each part surface defined in the chosen parts, this option creates a corresponding boundary in the target region.
- Create One Boundary for Each Part
- Creates one boundary for each part, regardless of how many part surfaces are defined on the part.
- Assign All Part Surfaces to an Existing Boundary
- When assigning parts to an existing region, you can similarly choose to assign part surfaces to boundaries within the region.
- Create One Boundary for All Part Surfaces
- Assigns all the part surfaces to one boundary. You can edit the name of the target boundary in the adjacent text box.
|
| Interface Options
|
- Create Boundary-mode Interfaces From Contacts
- Creates an interface for each pair of
contacting boundaries. Only one pair of boundaries is
allocated to a single interface using this option. For
simulations containing a high number of adjacent
boundaries, this option results in a large number of
interfaces.
- Create Contact-mode Interfaces From Contacts
- Creates an interface for all contacting
part surfaces between the selected parts, as defined by
the part contacts (see Part Contacts). As a result a single
interface is created for each pair of contacting
regions. In general, this option results in a smaller
number of interfaces.
- Do Not Create Interfaces From Contacts
- Does not generate any
interfaces between the selected parts
|
Automatic Naming of Regions and Boundaries
In the automatic naming process, the name that is given to a region or boundary differs depending on what settings are used. In the following example, both cases have the same part and part surface name:
Body 1 and
Inlet respectively. In both cases, the selected boundary option is
Create a Boundary for Each Part Surface.
|
Region mode:
|
One region for each part
|
One region for all parts
|
|
New region name:
|
Body 1
|
Region
|
|
New boundary name:
|
Inlet
|
Body 1.Inlet
|
