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lirongaz March 5, 2013 08:35

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?

RodriguezFatz March 5, 2013 08:44

There can be many reasons. Please post a picture of the residuals.

lirongaz March 5, 2013 10:02

1 Attachment(s)
here are my residuals...
does it help?

RodriguezFatz March 5, 2013 10:40

They look fine. You should let it running until residuals are lower.

diamondx March 5, 2013 12:37

look at the solution method, the tutorials work in first order, yours are second order i guess.

oj.bulmer March 6, 2013 08:39

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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