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Download Tecplot 360 2009 R2 User`s Manual
Transcript
CFD Data Analysis When we click Integrate, the total mass appears as the result of the integration. The Integrate dialog and the results are shown in Figure 22-9. Figure 22-9. The Integration dialog and the integration results for calculating the volume under the surface shown in Figure 22-8. Calculating Mass Flow Rate To calculate mass flow rate, you must first set your convective variables in the Field Variables dialog. See Section 22- 3.1 “Choosing the Convective Variables” for information on setting these variables. We will now calculate the mass flow rate at various stations in the streamwise direction. This will give us an indication of how well converged our solution is to steady-state. The Integrate dialog makes this easy with the Mass Flow Rate integration type. We select this option and specify integration over J-lines (which is equivalent to I-planes in 2D). Note that the entire Integrand section of the dialog is disabled. Tecplot 360 calculates the necessary variable (momentum) from information entered in the Fluid Properties and the Field Variables dialogs. We only wish to plot the results, so we select this option at the bottom of the Integrate dialog, specifying that the result be named “Mass Flow.” When we select Integrate, the mass flow rate is 464
