1.2 
Tutorial 2
Tutorial 2 introduces the Mapper utility available within the Virtual Engines environment. At the conclusion of this tutorial you will be able to create a Mapper simulation and analyze the results within Analyze.
1.2.1 Creating a Mapper
A Mapper is a special form of a test-procedure that allows any single variable in the engine to be adjusted over a range of values and automatically creates new engines for simulation. This allows simple parametric studies on a single variable to be performed without having to manually create each alternative engine design.
Start Simulation Explorer and load the FSAE engine model into Design as shown in Figure 2-1.
Figure 2-1: Loading the sample engine into Design
Once in Design, click the New Mapper button in the button bar. The Test-Procedure is cleared and converted to a Mapper Test-Procedure as shown in Figure 2-2.
Figure 2-2: Selecting a new Mapper
The Test-Procedure now contains a Mapper component that must be defined in addition to the other test-procedure parameters. Right-click on Speedhook, select Design from the popup menu and set the values as shown in Figure 2-3.
Figure 2-3: Speedhook settings
Click on the Simulation tab and set the Simulator Name as Simlev5B. Click on the Fuel tab and set the Fuel as Unleaded. Click the Close button. Right-click on the Reference Ambient and set the Temperature to 20.
Right-click on the Mapper node and select Design from the popup menu. The Mapper design window, Figure 2-4, is displayed.
Figure 2-4: Mapper Design window
A list of the available engine and test-procedure variables that can be mapped is displayed in the tree view. Click on the ‘+’ sign to the left of Pipes, then INTB, then Sections and finally Section 1 to expand the tree view as shown in Figure 2-5.
Figure 2-5: Select the variable to map
Click on Length to select pipe INTB – Section(1) – Length as the variable to map. The Variable name is displayed in the right-hand side of the window. The Current value in the base engine is also displayed (150 mm). Enter 50 for the Minimum value, 250 for the Maximum value and 50 for the Increment as shown in Figure 2-6. Click the Close button when done.
Figure 2-6: Set the range over which to map the variable
Click the Save Test-Procedure button in the button bar. Accept the default name as shown in Figure 2-7 and select the OK button
Figure 2-7: Save the Test-Procedure
Click on the Submission Options button. Uncheck both CSV and Animate if checked. We will not create animation data for this simulation. Click the Submit button in the button bar to submit the simulation. The Submit Status window, Figure 2-8, is displayed.
Figure 2-8: Submitting the Mapper.
A total of six engine simulations are submitted – the base engine and the five alternative engine designs with varying section length. The Mapper creates the new engines automatically.
Click the OK button and exit Design. Select Simulation Explorer and click on the Simulations node in the tree view to update the right hand window. There should now be six simulations queued. If you have not yet started the Simulator, select Start – Program Files – Virtual Engines – Start Simulator. Refresh the Simulation Explorer window using F5. The Simulations should now show one active and five queued.
Click on the ‘+’ sign to the left of Projects and the ‘+’ sign to the left of project FSAE. Simulation Explorer should appear as shown in Figure 2-9.
Figure 2-9: Mapper project in Simulation Explorer.
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