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March 2, 2012, 22:20 |
Question Re: Residuals
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#1 |
Senior Member
Daniel
Join Date: Jul 2009
Location: Montreal, Canada
Posts: 156
Rep Power: 17 |
Hello all,
I have a question regarding residuals. I am running pimpleFoam, and after running foamLog I am not certain which of the many residual files will tell me how well my simulation is converging. I have the following files: p_0, p_1, p_2, p_3, pFinalRes_0, pFinalRes_1, pFinalRes_2, and pFinalRes_3. p_0 is typically ~0.5, and pFinalRes_0 ~1e-12 (equal to my convergence criterion). Note that this is a transient sim, so I expect the residuals to be higher than the 1e-5 that would normally be acceptable for a steady sim. Can someone please confirm that it is p_0 that is the true measure of convergence? Thanks, Dan |
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March 14, 2012, 05:51 |
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#2 |
Senior Member
Ralph Moolenaar
Join Date: Aug 2010
Location: 's-Hertogenbosch, the Netherlands
Posts: 120
Rep Power: 16 |
Dear Daniel,
I never have used foamLog but I guess that the different files for the pressure are due to the use of correctors (as defined in the fvSolution-file) and subcycles. My bet would be that p0 would be indeed the best measure for convergence. Cheers, Ralph
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