4.12. Internal Surfaces¶
Internal surfaces are surfaces defined within the overall boundaries of the model.
To define an internal surface, there must be a region already defined in the Regions Pane.
4.12.1. Add/Delete Internal Surfaces¶
To add an internal surface, navigate to the ISs
pane from the Modeler View,
and click the (+) button. A popup dialog will appear to select
region(s) that will define the internal surface. Each region can only be used in a single internal surface.
All regions defined in the regions Pane are listed in the popup, but only the regions of the selected Surface Type are selectable.
Plane Regions can be Impermeable internal surfaces.
Box Regions can be X-Axis, Y-Axis, or Z-Axis Impermeable internal surfaces.
Plane Regions can be Semi-permeable internal surfaces.
Box Regions can be X-Axis, Y-Axis, or Z-Axis Semi-permeable internal surfaces.
To remove an internal surface, navigate to the ISs
pane from the Modeler View, select
the internal surface to remove, and click the (-) button.
4.12.2. Internal Surface Type¶
Planar internal surfaces can be of type:
Impermeable
Semi-Impermeable
Volumetric internal surfaces can be of type:
X-Axis Impermeable
Y-Axis Impermeable
Z-Axis Impermeable
X-Axis semi-permeable
Y-Axis semi-permeable
Z-Axis semi-permeable
4.12.3. Fluid permeability¶
The permeability is only definable for semipermeable regions. The default value is 1.0d32 m².
4.12.4. Internal resistance coefficient¶
The internal resistance is only definable for semipermeable regions. The default value is 0.0 m⁻¹.
4.12.5. Internal Surface Velocities¶
For each solid phase, specify the velocity of that solid through the surface (in meters/second).
Disabled for Impermeable surface (since by definition the velocity would be zero).