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Plots

This section shows some of the common plots used in the vane pump simulation. The steps to create the plots are:

1. Click the Load Results option in the Simulation Panel.
2. Select the required result file in the ensuing Load Results dialog box, click Open.

Mass Flux

The mass balance is monitored with the mass flux plots.

1. Select inlet_inlet and outlet_outlet under Boundaries in the Geometric Entities Panel.
2. Click Add XY-Plot icon in the Toolbar.
3. Click Click for Variable List icon, select Mass Flux under Flow in the Plot Panel .
4. Select Plot Selected Variables icon > click Plot Property icon. In the Plot Property dialog box enable Moving Average and enter 210, click OK.
5. Click Combine Entity Data into a Single Curve to obtain the net mass flux.

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Note: The moving average is used in transient simulations to obtain the average behavior over the entire simulation time. It can be specified under Click for Variable List > Plot Property dialog box > enable Moving Average. The value in the Moving Average input is number of preceding time steps (sampling interval) for calculating the average.

Pressure

The pressure ripples are monitored at the monitoring point outlet_point. It is obtained as follows:

1. Select outlet_point under Points in the Geometric Entities Panel.
2. Click Add XY-Plot icon in the Toolbar.
3. Click Click for Variable List icon in Plot Panel toolbar, select Pressure in the Flow list.
4. Click Plot Selected Variables icon in the Plot Panel toolbar.

 

Note: Unit of pressure can be changed as, select Plot Property icon > select unit from the Unit drop-down list under Display Units in the Plot Property dialog box > click OK.

Pocket Total Volume and Pocket Gas Volume

The pocket total volume and gas volume are monitored at the monitoring point pocket. It is obtained as follows:

1. Select pocket _point under Points in the Geometric Entities Panel.
2. Click Add XY-Plot icon in the Toolbar.
3. Click Click for Variable List icon in Plot Panel toolbar, select Pocket Total Volume and Pocket Gas Volume in the Vane list.
4. Click Plot Selected Variables icon in the Plot Panel toolbar.

Note: Pocket Total Volume is compressing and expanding during each revolution hence, sinusoidal movement is observed in the plot. Pocket Average Pressure, Pocket Total Mass, and Pocket Gas Mass can be plot under Vane module in the Plot Panel.

Power

The instantaneous integrated power about the axis of rotation for the rotor and vane is plotted.

To create the plot for the power:

1. Select rotor and vane under Boundaries in the Geometric Entities Panel.
2. Click Add XY-Plot icon in the Toolbar.
3. Click Click for Variable List icon in Plot Panel toolbar, select Revolution Average Power in the Vane list.
4. Click Combine Entity Data into a Single Curve to obtain the power.