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Step 8: Reacting Flow Solution

1.   Enable Volumetric for the reacting flow solution.

figure Models figure figure Species figure Edit...

figure

(a)   Enable Volumetric and Wall Surface in the Reactions group box.

(b)   Enable Mass Deposition Source in the Wall Surface Reaction Options group box.

(c)   Click OK to close the Species Model dialog box.

2.   Retain the default convergence criteria for calculation.

figure Monitors figure figure Residuals figure Edit...

figure

3.   Request 250 more iterations.

figure Run Calculation

  The solution will converge in approximately 75 iterations.

4.   Compute the mass fluxes.

figure Reports figure figure Fluxes figure Set Up...

figure

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

(b)   Select outlet and velocity-inlet from the Boundaries selection list.

(c)   Click Compute and close the Flux Reports dialog box.

5.   Display contours of surface deposition rate of ga (Figure  16.3).

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

figure

(a)   Enable Filled in the Options group box.

(b)   Select Species... and Surface Deposition Rate of ga from the Contours of drop-down lists.

(c)   Select wall-4 from the Surfaces selection list.

(d)   Click Display and close the Contours dialog box.

  Rotate the display with the mouse to obtain the view as shown in (Figure  16.3).

Figure 16.3: Contours of Surface Deposition Rate of ga
figure

6.   Reduce the convergence criteria.

figure Monitors figure figure Residuals figure Edit...

figure

(a)   Enter 5e-06 for Absolute Criteria for continuity.

(b)   Click OK to close the Residual Monitors dialog box.

7.   Request 300 more iterations.

figure Run Calculation

  The solution will converge in approximately 190 iterations.

8.   Check the mass fluxes.

figure Reports figure figure Fluxes figure Set Up...

figure

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

(b)   Retain the selection of outlet and velocity-inlet in the Boundaries selection list.

(c)   Click Compute and close the Flux Reports dialog box.

9.   Save the case and data files ( surface-react1.cas.gz and surface-react1.dat.gz).

File $\rightarrow$ Write $\rightarrow$ Case & Data...

10.   Display contours of surface deposition rate of ga (Figure  16.4).

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

Figure 16.4: Contours of Surface Deposition Rate of ga
figure

Figure 16.5: Scaled Residuals
figure

next up previous contents Previous: Step 7: Non-Reacting Flow
Up: Modeling Surface Chemistry
Next: Step 9: Postprocessing
Release 12.0 © ANSYS, Inc. 2009-02-09