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-   -   RhoTurbFoam max number of iterations (http://www.cfd-online.com/Forums/openfoam-solving/57791-rhoturbfoam-max-number-iterations.html)

jia_kok February 12, 2009 00:02

Hi, I'm using rhoTurbFoam to s
 
Hi, I'm using rhoTurbFoam to solve for supersonic flow. The solver works fine for mach number 1.0, but i get the error message that the max number of iterations is reached verytime i do something more than mach 1.0. I've attached the error message below.

--> FOAM FATAL ERROR : Maximum number of iterations exceeded#0 Foam::error::printStack(Foam:http://www.cfd-online.com/OpenFOAM_D...part/proud.gifstream&) in "/home/jiaming/OpenFOAM/OpenFOAM-1.4.1/lib/linux64GccDPOpt/libOpenFOAM.so"
#1 Foam::error::abort() in "/home/jiaming/OpenFOAM/OpenFOAM-1.4.1/lib/linux64GccDPOpt/libOpenFOAM.so"
#2 Foam::hThermo<foam::puremixture<foam::consttranspo rt<foam::speciethermo<foam::hc onstthermo<foam::perfectgas> > > > >::calculate() in "/home/jiaming/OpenFOAM/OpenFOAM-1.4.1/lib/linux64GccDPOpt/libbasicThermophysica lModels.so"
#3 Foam::hThermo<foam::puremixture<foam::consttranspo rt<foam::speciethermo<foam::hc onstthermo<foam::perfectgas> > > > >::correct() in "/home/jiaming/OpenFOAM/OpenFOAM-1.4.1/lib/linux64GccDPOpt/libbasicThermophysica lModels.so"
#4 main in "/home/jiaming/OpenFOAM/OpenFOAM-1.4.1/applications/bin/linux64GccDPOpt/rhoTurbF oam"
#5 __libc_start_main in "/lib64/libc.so.6"
#6 Foam::regIOobject::readIfModified() in "/home/jiaming/OpenFOAM/OpenFOAM-1.4.1/applications/bin/linux64GccDPOpt/rhoTurbF oam"


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-1.4.1/src/thermophysicalModels/specie/lnInclud e/specieThermoI.H at line 83.

FOAM aborting

Cheers

Jia

haghajani March 12, 2009 06:21

Hia Jia, do you found the tri
 
Hia Jia,
do you found the trick?
I faced this error in dieselFoam,

regards,
Hamed

kieranwood85 March 13, 2009 06:43

Hi, I am also getting this
 
Hi,

I am also getting this message when running rhoCentralFoam. My case has both subsonic and supersonic flow and seems to work fine but then always crashes with this error after a while.

Does any one know what it means?

Thanks
Kieran

mehulkumar April 17, 2009 09:57

Same Err
 
Hi..friends.
I am solving one case using rhoTurbFoam but after few iteration it stops with the same error report as mentioned above.
I am not getting why this Err means.
What I understood is there may be sudden Temp raise found this is causing Err.
I am not sure.
I tried to verify BCs and discretization schemes also but got no idea about Err cause.
Pls..come forward and help to understand it.

Thanks
Mehulkumar

shantha June 29, 2009 05:43

shantha
 
1 Attachment(s)
hello friends,
i am facing some issues after 2 iter, please find attached log file
Maximum number of iteration exceeded#0 Foam ::error::printStack(Foam::Ostream&) error.
please help me any body, i found error after 2 iterations

shantha June 29, 2009 05:48

hi..jia_kok

Did you fix that issue? if it how did you do it?

i am facing same problem, please help me on the same

Rachel July 3, 2009 05:03

MOst probably your BC are wrong.
Look at rho !
Its too high !
That is leading to problem with time step continuity...
recheck your BC and how do you initialize your domain?


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