Defining Physics and Conditions

The physics and conditions are specified as follows:

Click Select Modules in the Model Panel. The Physical Model Selection dialog box opens.
Select Centrifugal under Available Modules list, click Add.
Select Turbulence under Available Modules list and click Add.
Select Cavitation under Available Modules list and click Add.
Click Close to close the Physical Model Selection dialog box.

Figure 6.23 - Adding modules

Select Centrifugal in the Model Panel.
Enter Number of Blades as 6 for Pump Configuration list in the Properties Panel.
Enter the parameters for Angular Velocity Definition as follows.
- Rotational Direction: Counterclockwise
- Rotational Speed: 2950 rpm
- Rotational Axis Vector: 0, 1, 0
Ensure the parameter Rotor Center as 0,0,0.

Figure 6.24 - Operating parameters

The boundary conditions are specified as follows:

Select inlet_inlet from the Boundaries list under Volumes in the Geometric Entities Panel.
Select Inlet from the Centrifugal drop-down list in the Model Tab of Properties Panel.
Enter Total Pressure as 101325 Pa.

Figure 6.25 - Inlet conditions

Select rotor_blades, rotor_bot and rotor_top from the Boundaries list in the Geometric Entities Panel.
Select Rotor from the Centrifugal drop-down list in the Model Tab of Properties Panel.

´	Note: The rotational parameters specified for Rotor boundary are same as the values defined under Centrifugal in the Model Panel. These values can not be changed as indicated by blue font.

Figure 6.26 - Rotor conditions

Select volute_rotating_walls from the Boundaries list in the Geometric Entities Panel.
Select Rotating Wall from the Centrifugal drop-down list in the Model Tab of Properties Panel.

Figure 6.27 - Volute Rotating Wall conditions

Select volute_outlet from the Boundaries list in the Geometric Entities Panel.
Select Outlet from the Centrifugal drop-down list in the Model Tab of Properties Panel.
Enter 0.028 m³/s for Volumetric Flux.

Figure 6.28 - Outlet conditions

Enter the parameters for Operating Conditions as follows.

Figure 6.29 - Fluid properties