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When you get to step 6 of the tutorial, plot each of the graphs as described. However, for each of the plots, overlay the corresponding result for the coarser mesh so that we may compare them. To do this, after the plotting the finer mesh result, in the Solution XY Plot Window, click on Load File.... Navigate to your working folder, click on the appropriate filename for the previous result, eg. vel.xy for centerline velocity, and click OK. Click Plot. You'll see both results plotted in the same the graphics window.

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Now, let's take a look at the coefficient of skin friction. This time, load the cf.xy file to compare against the plot. This is the coefficient of skin friction plot:

 
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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.

 
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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.

 
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