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Simulation

This section explains the settings to run the circumferential valve simulation.

Create Monitoring Points

1. On the Geometric Entities Panel toolbar, click three times on Create a Monitoring Point icon, to create Points Point 01, Point 02 and Point 03.
2. Rename the Points and specify their Position values as shown in Table 6.33 in the Geometry Tab of Properties Panel (see, Figure 6.587).

Points	Rename as	Position Values
Point 01	valve_pin	-0.0181899, 0.022586, 0
Point 02	valve_ref_point	-0.012, 0.0275, 0.01
Point 03	inlet_inlet	-0.008, 0.023, 0.01

Table 6.33 - Rename monitoring points

Note: Monitoring points need to be created before running the simulation for recording data (see, Figure 6.588).The position of a Points may also be dragged to a new location using the Select icon in Toolbarand the Left Mouse Button.

 

Figure 6.587 - Create monitoring point

Figure 6.588 - Monitoring points

 

Transient simulation

1. Click Simulation Panel.
2. Define Number of Iterations and Result Saving Frequency to 50 and 480. The Number of Cycles, Simulation Time (Duration) and the Number of Time Steps are automatically preset by the Circumferential module (see, Figure 6.589) .
3. After you save the project, click Start to run the simulation.
4. The result files are saved as .sres in the working folder (Example : "circumferentialvalve_480.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 6.590).

Figure 6.589 - Simulation settings

Figure 6.590 - Residuals - Circumferential valve

 

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.