Panel |
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Problem Specification |
Step 7: Refine Mesh
In order to assess the numerical accuracy of the results obtained, it is necessary to compare results on different meshes. We'll re-do the calculation on a 100x60 mesh which has twice the number of nodes in the radial direction as the 100x30 mesh. You can download the 100x60 mesh here.
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Navigate to your working directory elect the pipe100x60.msh
file you have created. Click OK. Display the grid. Check its size.
Finer Mesh Analysis
Repeat steps 4, 5, and 6 of this tutorial with the finer mesh.
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Once again, we can see that due to the fine degree of each mesh, there isn't much difference between the two plots. Save this plot as cf2.xy
. Now, study the velocity of the outlet by plotting and comparing to the graph in profile.xy
.
(Click picture for larger image)
Once again, the finer mesh in this case doesn't offer much more precision than the coarser mesh. Save this plot as profile2.xy
. Now let's take a look at the YPlus plot.
(Click picture for larger image)
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