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Jump in Residuals

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Old   March 1, 2011, 18:30
Default Jump in Residuals
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Ryan Z. Davis
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Hi all,

I am using FLUENT to run a 2-D laminar natural convection problem. While I was running the simulation I noticed a couple of strange jumps in the residuals after about 14000 iterations and again after about 17500 iterations. The residuals return to where they were after a few iteration, but I was wondering if anyone knows why it would do this.

P.S. I'm trying to attach a picture to show a plot of the residuals.

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Old   March 1, 2011, 22:39
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Judging after your residuals your solution is converged, the oscillations between 1e-08 and 1e-10 probably means you are at the limit of your machine precision, I think they are not looking strange.

If I'm wrong please correct me,

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