Conditions

This section explains the conditions related to the boundaries and the volume in a vane pump simulation.

The conditions for a desired boundary are accessed as follows:

Geometric Entities Panel > Boundaries > [Desired boundary]

Properties Panel > Model Tab > Vane > [Desired options]

Figure 6.217 - Vane-Conditions

Chamber Wall: This is assigned to the outer boundary of the mesh volume encircling the pumping chamber (chamber wall). It can correspond to a physically solid surface, a fluid interface, or a combination of the two. The vane pumping chamber mesh will “slide” along the Chamber Wall as the vanes rotate.

Note: This boundary can be a solid surface, a fluid-fluid interface, or a combination of the two (the latter two conditions are achieved via MGI (s)).

Rotor: This is assigned to rotor surfaces. This condition is automatically assigned during the vane meshing. The rotational properties of the Rotor are set under the global Angular Velocity Definition parameters and displayed in Blue.
Vane: This is assigned to vane surfaces. This is automatically assigned during the vane meshing. The rotational properties of the Vane are set under the global Angular Velocity Definition parameters and displayed in Blue
Groove or Side Gap: This boundary condition identifies a boundary of a volume that can be assigned a dynamic motion.
Inlet: This specifies an inlet boundary and assigns inlet properties for Flow and all other modules. The default inlet boundary for Vane module uses a Static Inlet Pressure as the Flow boundary conditions.
Outlet: This specifies an outlet boundary assigns outlet property for Flow and all other modules. The default outlet boundary for Vane module uses a Static Outlet Pressure as the Flow boundary conditions.
Rotating Wall : This boundary condition enables setting a rotational velocity on a boundary. This allows specifying an angular velocity (rpm) and an axis of rotation for a selected boundary other than the rotor. This adds rotational sources to the momentum of the fluid (via the Flow module); it does not displace the boundary.
Wall: This corresponds to a solid boundary and by default assigns the Wall boundary condition for Flow and other modules.

Note: The default values in each module under the template can be accessed and modified, by using the Extended Mode

The Vane template has conditions which apply to Volumes in the simulation under Vane module. The conditions for a desired volume are accessed as follows:

Geometric Entities Panel > Volumes > [Desired Volume]

Properties Panel > Model Tab > Vane > [Desired options].

Each volume may be assigned specific independent volume conditions.

Material: The material properties are provided as a convenience and can also be set individually under the appropriate modules using Extended Mode. The fluids available are Oil, Water, Air and User Defined.

Note: Air is only available when the Cavitation module is not selected.

Operating Conditions: The Operating Conditions are provided as a convenience and can also be set individually under the appropriate modules using Extended Mode. The available properties depend on the modules that are active.

Figure 6.218 - Material properties

Output

Primary and derived variables can be integrated over a selected boundary and stored in the ASCII format file filename_integrals.txt for subsequent Post-Processing. These data can also be displayed real-time in the GUI using the X-Y Plots feature. The quantities available for output for a boundary depend on the boundary type.

The desired output can be activated for a selected boundary in the Model Tab of the Properties Panel. The outputs which can be activated are specified as User Select (Area, Normal).

For the boundaries specified as Inlet and Outlet, the output quantities available in the Plot Panel are Revolution Average Mass Flux, Revolution Average Volume Flux.

For the boundaries specified as Rotor, Vane and Rotating Wall, the output quantity available in the Plot Panel is Revolution Average Power.

The Output Properties other than User Select, are automatically calculated and stored in the output file and may be selected and displayed in X-Y Plots.

For more information on outputs refer Output variables under each module.

When monitoring Points are created as part of the simulation, the output quantities are stored in the ASCII format file filename_points.txt for subsequent post-processing.