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mike February 1, 2008 09:36

Floating point exception: Overflow?
Hi, when I run the solver it complete 9 iterations but then i get this error:

ERROR #001100279 has occurred in subroutine ErrAction. | Message: | | Floating point exception: Overflow

what causes this error?

CFD newbie February 1, 2008 13:29

Re: Floating point exception: Overflow?
I am having same problem, please let me know how to resolve the issue if you find out. My solver crashes after 2 time steps.

CFD newbie

KK February 1, 2008 19:26

Re: Floating point exception: Overflow?
Hi, I get this error quite often when residual levels go very down (up to 10^-7 or 10^-8) at a sudden and the solver crashes.

Bascially I feel safe to assume that it happens when the solver is unable to hande the numerics occuring.

Try reducing your time step for transient flow or 'false time step' for steady state flow. Make sude that your initial guess is not making any disaster.

And if you get some better answer, please share with us. I will love to know.

Regards, KK

c120613 December 15, 2009 12:37

Hi KK,

but which values are reasonable for the "false time step" (steady case).
How can I calculate an approximate value?


ghorrocks December 15, 2009 18:30

This is all discussed in the documentation. Have a look at tips for obtaining convergence.

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