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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 takes you through some of the steps required to refine your initial results and hopefully make them closer to the experimental results.

In this section, you will:

1. Refine the initial mesh

2. Compare the accuracy of the refined mesh to the original meshVerification and validation is a formal process for checking results. Each of these terms has a specific meaning which we won't get into here. We'll act like consultants and do the bare minimum: we'll refine the mesh and make sure that the results are nearly independent of the mesh. We will also repeat the comparison with experiment which is a very important way to check simulation results.

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 smaller cells. In workbench, under Force Forced 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 project cells 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. Repeat the mesh steps, but this time use edge sizing of 50 and 0.02.
 

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

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