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Old   March 5, 2013, 08:35
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ohad liron gazit
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hi! i'm new here in the forum and new in the fluent.
i made a case which suppuosed to be based on the case of ahmed body, acoording tutorials, and the results don't converge after 600 iterations.
i wonder what could be the problem. i guess it's not in the mesh, because i followed the tutorials.
could it be the models i used? i chose the K-epsilon realizable non eq.
what else can affect the convergence?
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Old   March 5, 2013, 08:44
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There can be many reasons. Please post a picture of the residuals.
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Old   March 5, 2013, 10:02
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here are my residuals...
does it help?
Attached Images
File Type: jpg residuals.jpg (57.5 KB, 25 views)
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Old   March 5, 2013, 10:40
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They look fine. You should let it running until residuals are lower.
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Old   March 5, 2013, 12:37
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look at the solution method, the tutorials work in first order, yours are second order i guess.
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Old   March 6, 2013, 08:39
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You should monitor the parameters of interest at different points, to make sure it is converged, rather than relying on the progress of the residuals.
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