Computational domain

This section explains the preparation of surfaces to create the domain. This is done with the operations splitting, combining and renaming of the surfaces.

Split Geometry

Select CAD Surfaces circumferential_valve in the Geometric Entities Panel.
Select Split/Combine Geometry or Grid in the Mesh Panel.
Select Split Disconnected from the Operation drop-down list in the Properties Panel, click Split Disconnected.Three new CAD Surfaces are created in the Geometric Entities Panel.
Rename the CAD Surfaces circumferential_valve_01, circumferential_valve_02, circumferential_valve_03 as valve, outlet and inlet respectively.

Figure 6.571 - Split geometry

Inlet Surfaces

Select the CAD Surfaces entity inlet in the Geometric Entities Panel.
Select Split by Angle from the Operation drop-down list in the Properties Panel.
Enter 75 deg for Angle, click Split by Angle. Three new CAD Surfaces entities inlet_01 to inlet_03 are created in the Geometric Entities Panel.
Rename the CAD Surfaces inlet_01, inlet_02, inlet_03 as inlet_wall, inlet_inlet, and inlet_mgi_valve respectively in the Geometric Entities Panel.

Figure 6.572 - Inlet surfaces

Outlet Surfaces

Select the CAD Surfaces entity outlet in the Geometric Entities Panel.
Select Split by Angle from the Operation drop-down list in the Properties Panel.
Enter 75 deg for Angle, click Split by Angle. Seven new CAD Surfaces entities outlet_01 to outlet_07 are created in the Geometric Entities Panel.
Rename the CAD Surfaces outlet_01 and outlet_03 as outlet_mgi_valve and outlet_outlet respectively in the Geometric Entities Panel.
Select the remaining CAD Surfaces entities and select Combine from the Operation drop-down list in the Properties Panel, click Combine.
Rename the combined CAD Surfaces as outlet_walls.

Figure 6.573 - Outlet surfaces

Valve Surfaces

Select CAD Surfaces valve in the Geometric Entities Panel.
Select Split by Angle from the Operation drop-down list in the Properties Panel.
Enter 75 deg for Angle, click Split by Angle. Ten new CAD Surfaces are created in the Geometric Entities Panel.
Rename CAD Surfaces valve_01, valve_02, valve_03, valve_05 and valve_06 as valve_cylinder_out, valve_mgi_inlet, valve_end, valve_top and valve_bot respectively .
Select CAD Surfaces valve_04. Select Split by Angle from the Operation drop-down list in the Properties Panel.
Enter 50 deg for Angle, click Split by Angle. Two new CAD Surfaces are created in the Geometric Entities Panel. Rename valve_04_02 as valve_cylinder_in.
Select the remaining valve CAD Surfaces and select Combine from the Operation drop-down list in the Properties Panel, click Combine.
Rename the combined CAD Surfaces as valve_valve.

Figure 6.574 - Valve surfaces