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11.12.3 Simulation

This section explains the settings to run the turbulent flow in a diffuser simulation.

Create Monitoring Points

The steps to create the monitoring points are as follows:

1. On the Geometric Entities Panel toolbar, click ten times Create a Monitoring Point to create Points Point 01 to Point 10.
2. Select each point in the Geometric Entities Panel, and specify their Position values, as shown in Table 11.11 in the Geometry Tab of Properties Panel refer, Figure 11.268

Points	Position values
Point 01	3.5, 0.050400, 0
Point 02	3.575, 0.0559, 0
Point 03	3.65, 0.0609, 0
Point 04	3.725, 0.0664, 0
Point 05	3.8, 0.0714, 0
Point 06	3.875, 0.0764, 0
Point 07	3.95, 0.0819, 0
Point 08	4.025, 0.0864, 0
Point 09	4.1, 0.0919, 0
Point 10	4.218, 0.0999, 0

Table 11.11 - Monitoring points

 

Note: Monitoring points need to be created before running the simulation for recording data, refer Figure 11.268 The position of a Points may also be dragged to a new location using the Select in Toolbar and the Left Mouse Button.

 

Figure 11.268 - Creating monitoring points

Steady Simulation Settings

In the Simulation Panel select Steady radio button. Enter Number of Iterations as 500 and Result Saving Frequency as 500. Verify that the Start from Initial Values button is selected. Click Save on the standard toolbar. In the Simulation Panel, click Start to run the simulation (see, Figure 11.269).

The residuals for the Steady-state simulation are displayed under the Residual Tab in the Plot Panel as shown in Figure 11.270).

Figure 11.269 - Steady simulation settings

Figure 11.270 - Steady -Residual graph

 

Note: For a Steady State Simulation, the result file is saved as .sres in the working folder and the same file gets overwritten at regular intervals specified by the Result Saving Frequency parameter. The final result file is written at the end of all iteration or when the solution converges.