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Step 8: Postprocessing

1.   Display filled contours of total pressure (Figure  10.4).

figure Graphics and Animations figure figure Contours figure Set Up...

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(a)   Enable Filled in the Options group box.

(b)   Select Pressure... and Total Pressure from the Contours of drop-down lists.

(c)   Click Display and close the Contours dialog box (see Figure  10.4).

  Total pressure contours show the expected pressure jump across the blower blades.

Figure 10.4: Contours of Total Pressure
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2.   Display velocity vectors (Figure  10.5).

figure Graphics and Animations figure figure Vectors figure Set Up...

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(a)   Enter 5 for Scale.

(b)   Click Display and close the Vectors dialog box (see Figure  10.5).

Figure 10.5: Velocity Vectors
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  By default, Auto Scale is chosen. This will automatically scale the length of velocity vectors relative to the size of the smallest cell in the mesh. To increase the length of the "scaled'' vectors, set the Scale factor to a value greater than 1.

3.   Report the mass flux at pressure-inlet-5 and pressure-outlet-9.

figure Reports figure figure Fluxes figure Set Up...

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(a)   Retain the selection of Mass Flow Rate in the Options group box.

(b)   Select pressure-inlet-5 and pressure-outlet-9 in the Boundaries selection list.

(c)   Click Compute.

  The net mass imbalance should be no more than a small fraction (say, 0.5%) of the total flux through the system. If a significant imbalance occurs, you should decrease your residual tolerances by at least an order of magnitude and continue iterating.

  The flux report will compute fluxes only for boundary zones.

(d)   Close the Flux Reports dialog box.

  Use the Surface Integrals option to report fluxes on surfaces or planes.

figure Reports figure figure Surface Integrals figure Set Up...

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