Quick start basics - Your first simulation session .

With the model initialized to a design point, simulation input in the form of deviating operating conditions can be specified, which will make the engine operate off-design. Model initialization for a design is automatically performed before a steady state calculation as long as the design has not changed or manually the model has been initialized. For a start, let's modify the fuel flow in order to determine a partial power operating point.

Click in the Project tree panel on the "TJET_Config" node to load the original configuration. Now add a new case model (name it "Off-design case") and set the case type to Steady-State. Double-click the manual fuel control icon of the model panel, or alternately right click on the icon and select Edit from the pop-up menu. The component data window for the manual fuel control component is now open.

2.	Click the General tab.

3.	Modify the fuel flow value Wf from the design value of 0.38 kg/s to 0.3 kg/s and click OK.

4.	Press the run button (green arrow) or press F9 to start the off-design steady state simulation. Note that a reference (design) is calculated to scale the engine.

The table will reappear as shown, showing the off-design steady state performance data corresponding to a fuel flow of 0.3 kg/s on the second row. Study the differences in data.

Table SteadyState Output

5.	Repeat the process for other fuel flows or other simulation input changes.

For example, click the ambient conditions button above the project tree (

), increase the altitude value Zp on the Off-design tab, click OK and run the simulation again (F9).

6.	Click Model\|Reset OD input to DP values to reset the model variables and undo changes to load last design values.