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Lift and Drag coefficient benchmarking not agreeing with NASA |
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May 3, 2016, 16:59
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Lift and Drag coefficient benchmarking not agreeing with NASA
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Join Date: Apr 2016
Posts: 39
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Following NASA's recommendations on their benchmark page - http://turbmodels.larc.nasa.gov/bump.html - I made the appropriate changes to the source code and am testing their bump in a channel case. In the pdf with recommendations - http://turbmodels.larc.nasa.gov/openfoam_issues.html - they specifically outline values for U,p,nut, and nuTilda. I am using their mesh, their values, and their solving schemes, but my coefficients are magnitudes of order off of theirs. Any ideas as to what might be going wrong? The strangest part is that it seems to reach a steady state, and I don't see any turbulence off of the back of the bump.
Full case file - https://dl.dropboxusercontent.com/u/...in_channel.zip |
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