Simulation

This section explains the settings to run the vane pump simulation.

Create Monitoring Points

In a vane pump simulation, inherent flow ripples are caused by the pumping mechanism, which are of interest in the analysis. The steps to create the monitoring points are as follows:

On the Geometric Entities Panel toolbar, click two times Create a Monitoring Point icon, to create Points Point 01 and Point 02.
Rename Points and specify their Position values as shown in Table 6.5 in the Geometry Tab of Properties Panel (see, Figure 6.240).

Points	Rename as	Position Values
Point 01	outlet_point	-0.0174, 0.0256, -0.0286
Point 02	pocket_point	0.035, 0, 0.01

Table 6.5 - Rename monitoring points

´	Note: Monitoring points need to be created before running the simulation for recording data (see, Figure 6.241). The position of a point may also be dragged to a new location using the Select icon (Toolbar) and the Left Mouse Button.

Figure 6.240 - Create monitoring point

Figure 6.241 - Monitoring points

Transient simulation

Select Simulation Panel.
Define Number of Iterations and Result Saving Frequency to 50 and 210. The Number of Revolutions, Simulation Time (Duration) and the Number of Time Steps are preset by the Vane module (see, Figure 6.242).
After you save the project, click Start to run the simulation.
The result files are saved as .sres in the working folder (Example : "vane-pump_210.sres"). The number of result files depends on the Result Saving Frequency.

Note: The Result Saving Frequency option in the Simulation Panel is set to a small value (say 5 or 10) before running the simulation to obtain better animations.

The residuals are displayed under the Residual tab in the Plot Panel (see, Figure 6.243).

Figure 6.242 - Simulation settings

Figure 6.243 - Residuals-Vane

Note: The default Converge Criterion is 0.1 for Transient simulations. When the residuals for all the variables drop by one order or the maximum Number of Iterations is reached, the calculation proceeds to the next time-step.