4.4. Regions¶
The Regions pane defines spatial regions (points, lines, planes, boxes, or STLs) of the geometry that are used for:
Initial Conditions
Boundary Conditions
Point Sources
Internal Surfaces
Monitors
Outputs
The following buttons are at the top of the Regions pane:
Icon |
Description |
---|---|
create a new region |
|
delete the selected region |
|
duplicate the selected region |
|
create a region that encompasses the entire domain |
|
create a region on the left side of the domain |
|
create a region on the right side of the domain |
|
create a region on the top side of the domain |
|
create a region on the bottom side of the domain |
|
create a region on the front side of the domain |
|
create a region on the back side of the domain |
The (Add) button creates a new region. The region will be created with a
generic name such as R_1
; it is strongly recommended to rename the region to
something more descriptive, so that it is easier to refer to it later.
The Color button will change the color of the region in the model setup view.
The table created with the “From” and “To” fields for the X, Y, and Z axes define the extents of the
region. These widgets take special parameters, min
and max
, that
reference the minimum and maximum values of the domain, as specified in the
geometry section. These values will get automatically updated when the
extents in the geometry section are updated. The region type will be
inferred from the specified extents.
If the region needs to be a collection of triangles from the STL file, select the ‘Select facets’ (STL) checkbox. The selection shape can be changed between a box and an ellipsoid. Triangles that fall on the edge of the shape can be sliced by selecting the ‘Slice facets’ checkbox. The triangles can be further filtered by the normal direction by specifying a vector and a deviation angle around that vector.
Hint
If a region is referenced by an item in the Used by
column, the region
can not be deleted and its type (STL vs non-STL) cannot be changed.