FLUENT - Forced Convection - Step 7

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Step 7: Verification & Validation

It is very important that you take the time to check the validity of your solution. This section leads you through some of the steps you can take to validate your solution.

Refine Mesh

Let's repeat the solution on a finer mesh with more smaller element size.Repeat the mesh steps, but this time use edge sizing of 50 and 0.02. In the workbench, under Force Convection project, right click on Fluid Flow (FLUENT) and click duplicate. Rename the duplicate project to Force Convection Refined Mesh. You should have two projects cell in workbench.

Double click on Mesh for Forced Convection Refined Mesh. A new ANSYS Mesher window will open. Under Outline, expand mesh tree and click on Edge Sizing.

Under Details of "Edge Sizing", enter 60 for Number of Divisions. Under Bias select:

"---- -- - -" and when asked for the bias factor please enter 20.

Similarly, specify element size of 0.015m for Edge Sizing 2.

Click Update to generate the new mesh. Under Statistics, we should have mesh with 24,420 elements.

Close the ANSYS Mesher and go back to Workbench windows. Under Forced Convection Refined Mesh, right click on Fluid Flow (FLUENT) and click Update. Wait for a few minutes for FLUENT to obtain a solution.

We would want to compare the solution between the two meshes. To do that, drag the Solution cell of Forced Convection Refined Mesh to Results cell of Forced Convection.

Finally, double click on Results cell of Forced Convection to compare. Under Outline tab, click on the results of interest to analyze.