12/04/2011

Basic components of the Virtual Engines Part B

1.1.3 Monitor your Submission

Click the Windows Start button, select Programs, and then Virtual Engines, then Simulation Explorer from the Start Menu.

The Simulation Explorer main window is opened as shown in Figure 1-30. The left window of the Simulation Explorer shows you a hierarchical or tree view of your database and the right window shows you a list of items contained in the selected item from the tree view window (similar to Windows Explorer). Any window within Simulation Explorer can be refreshed to reflect any updates. This can be done by selecting Refresh from the View menu or by pressing the F5 key.

Figure 1-30: Simulation Explorer Main Window

You may click a ‘+’ sign to the left of a node in the tree view window to expand that node. You may click a ‘-‘ sign to the left of a node to collapse the items contained in that node. If you click a node in the tree view, the Simulation Explorer updates the list in the right window to display the contents of that node. You may double click a node in either window to expand that item. You may right-click a node in any window and the Simulation Explorer will present you with a menu of actions that are applicable to that node. You may also drag a node to another node, and if permitted, the Simulation Explorer will copy the dragged item.

The Simulations node is divided into three sub-nodes: Active, Queued and Errored. The Active node will display any current simulation activity as shown in Figure 1-31. If the simulation solver (Simulator) is running, the submitted point with the highest priority will be visible in the Active list. If for any reason the Simulator stopped while a simulation was running the status of the point will be displayed as “Stale” and will only change to “Active” when the Simulator is restarted.

As soon as the active simulation is completed, the next simulation waiting under the Queued node is transferred to the Active list and simulated. Consequently, many simulations may be submitted whilst the active point is still running. It is not necessary to wait for the active simulation to complete before submitting more work.

Figure 1-31: Current Simulation Activity

The Errored node will contain any points that errored during the simulation task. Simulations can error for a number of reasons but typically fail due to an error in the geometrical description of the engine at design time

During the Simulation procedure you may locate your results within the FSAE Project in the following manner. Click on the Projects node to display the list of projects in your database. The FSAE Project is displayed in the Tree View and its details are displayed in the right-hand portion of the Simulation Explorer window as shown in Figure 1-32.

Figure 1-32: FSAE Project Details

Click on the Engines node as shown in Figure 1-33. A list of engines in the FSAE project is displayed.

Figure 1-33: List of Engines in the FSAE Project

Click on the 4-cylinder 600 cc – restricted intake – 100 mm intake Engine node to display the Test-Procedures that have been ran against this engine. The simulation results are stored at this level in the database as shown in Figure 1-34

Figure 1-34: Simulation Results for Modified FSAE Engine

During the course of the next few minutes you may observe the Points count and the Max RPM increasing as the simulation writes each engine speed result to the database. When the Max RPM reaches 12000, the End RPM for your Speed Hook, you may proceed to the next step (Note this window does not refresh automatically – press the F5 key).

1.1.4 View Analyze Results

After your submission completes, you may use the Analyze application to view your results. Using Analyze is a two-step process: select results and select plots. Analyze uses Microsoft Excel? for storage of selected result data and for creating and viewing plots. The selected result data and selected plots may be stored in an Excel workbook. You may direct Analyze to reload the data from this workbook on subsequent executions. You may also use Microsoft Excel? to create custom graphs and data sheets. However, doing so may prevent Analyze from reloading the workbook correctly.

Right-click your Test Procedure item (Name column) in the list view window within Simulation Explorer. The Simulation Explorer will present you with a popup menu. Select Analyze from this menu as shown in Figure 1-35.

Figure 1-35: Viewing the Simulation Results in Analyze

The Analyze application will start and load your Project, Engine and Test Procedure into a workspace as shown in Figure 1-36.

Figure 1-36: Simulation Results Loaded into a New Analyze Workspace

Right click on Plots in the workspace window. Select the Add Plot item from the displayed pop-up menu as shown in Figure 1-37.

Figure 1-37: Adding Plots to the Workspace


The Add Plot(s) window is opened. This selection window allows the user to add plots with any X/Y axis variable to the Analyze Workspace. In this example, click on the check box to the left of BMEP as shown in Figure 1-38. Then, select the OK button.

Figure 1-38: Available Graphs within Analyze.

A BMEP vs. RPM plot is created in the Analyze Workspace as shown in Figure 1-39.

Figure 1-39: BMEP Plot added to Analyze Workspace

Right click anywhere in the BMEP vs. RPM plot. Select the Range item from the displayed pop-up menu as shown in Figure 1-40.

Figure 1-40: Changing the Axis Range of a Plot

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