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number of iterations exceeded From function specieThermo

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Old   September 16, 2010, 23:36
Default number of iterations exceeded From function specieThermo
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Alex
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Hi,

I am trying to solve a case with sonicFoam with time dependent BC (INLET ={p =45Mpa-->101325 Pa, U=1000-->0 and T 2000k-->300K} and outlet = zerogradient for all fields).

After some iterations i got this error message:

Maximum number of iterations exceeded#0 Foam::error:rintStack(Foam::Ostream&) in "/home/moumen/OpenFOAM/OpenFOAM-1.6/lib/linux64GccDPOpt/libOpenFOAM.so"
#1 Foam::error::abort() in "/home/moumen/OpenFOAM/OpenFOAM-1.6/lib/linux64GccDPOpt/libOpenFOAM.so"
#2 Foam::ePsiThermo<Foam:ureMixture<Foam::constTran sport<Foam::specieThermo<Foam::hConstThermo<Foam:: perfectGas> > > > >::calculate() in "/home/moumen/OpenFOAM/OpenFOAM-1.6/lib/linux64GccDPOpt/libbasicThermophysicalModels.so"
#3 Foam::ePsiThermo<Foam:ureMixture<Foam::constTran sport<Foam::specieThermo<Foam::hConstThermo<Foam:: perfectGas> > > > >::correct() in "/home/moumen/OpenFOAM/OpenFOAM-1.6/lib/linux64GccDPOpt/libbasicThermophysicalModels.so"
#4 main in "/home/moumen/OpenFOAM/OpenFOAM-1.6/applications/bin/linux64GccDPOpt/sonicFoam"
#5 __libc_start_main in "/lib/libc.so.6"
#6 _start at /usr/src/packages/BUILD/glibc-2.9/csu/../sysdeps/x86_64/elf/start.S:116


From function specieThermo<thermo>::T(scalar f, scalar T0, scalar (specieThermo<thermo>::*F)(const scalar) const, scalar (specieThermo<thermo>::*dFdT)(const scalar) const) const
in file /home/dm2/henry/OpenFOAM/OpenFOAM-1.6/src/thermophysicalModels/specie/lnInclude/specieThermoI.H at line 68.

FOAM aborting

Aborted

Has anyone experienced an error like the above? Any suggestions on what it might be?

Any help will be appreciated

Best regards.

Last edited by bruxellois; September 16, 2010 at 23:42. Reason: error
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Old   September 17, 2010, 03:03
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Christian Lucas
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Hi,

this problem is quite common. Have a look through the forum.

The problem is most probably related to pressure field. Have a look at it at a time step before the error occurs. I guess you have negative pressures, so the thermophysical library crashes.

Regards,
Christian
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Old   September 17, 2010, 03:09
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thanks for your response,

If so how can i fix that!
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Old   October 27, 2010, 06:16
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Hi have solved the problem by changing the controlDict file:

Quote:
writeControl adjustableRunTime;
and

Quote:
adjustTimeStep yes;
Hope this help
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Old   August 28, 2013, 04:48
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All

I have the same issue and I have been referring the forum but cannot find a solution that can get rid of this error for me. I have tried Alessandro's method but to no avail. Alex, kindly advise what you did to resolve max number of iterations exceeded.

I shall be very obliged.

Regards
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