[estang]

Hello,

for understanding i made a steady state conjugated heat transfer case with a solid cube that has a bore. There is a fluid moving through the bore and one side of the cube is being fixed at 500K. Other sides are adiabatic. At this stage i didn't want to simulate the heat transfer at interfaces. I just wanted to create a case that can be solved. But i get an error message:

Time = 0.1


Solving for fluid region Fluid
DILUPBiCG:  Solving for Ux, Initial residual = 1, Final residual = 0.0174955, No Iterations 6
DILUPBiCG:  Solving for Uy, Initial residual = 1, Final residual = 0.0322661, No Iterations 5
DILUPBiCG:  Solving for Uz, Initial residual = 1, Final residual = 0.00218862, No Iterations 6
DILUPBiCG:  Solving for h, Initial residual = 1, Final residual = 0.0112376, No Iterations 2
[0] 
[0] 
[0] --> FOAM FATAL ERROR: 
[0] Maximum number of iterations exceeded
[0] 
[0]     From function thermo<Thermo, Type>::T(scalar f, scalar T0, scalar (thermo<Thermo, Type>::*F)(const scalar) const, scalar (thermo<Thermo, Type>::*dFdT)(const scalar) const, scalar (thermo<Thermo, Type>::*limit)(const scalar) const) const
[0]     in file /home/opencfd/OpenFOAM/OpenFOAM-2.3.0/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 76.

what can be wrong?

i attached the case except my mesh because its too big to attach.

[ssss]

Remove de maxIter command for all the variables in the fvSolution.

You should increases de nonOrthonogalCorrectors also.

And maybe you should improve your mesh it doesn´t seem very good, although I'n not used to work with chtFoam and maybe the solid mesh requirement is quite low

[estang]

Thank you for your reply.

I set the maxIter because I tried a fix that helped in another thread. Now removed it from both regions and i set nNonOrthogonalCorrectors to 20 but the result is the same unforunately. I will change my mesh and try again.

[estang]

Maybe printStack can be of more help?

[0] #0  Foam::error::printStack(Foam::Ostream&) at ??:?
[0] #1  Foam::error::abort() at ??:?
[0] #2  Foam::species::thermo<Foam::hConstThermo<Foam::perfectGas<Foam::specie> >, Foam::sensibleEnthalpy>::T(double, double, double, double (Foam::species::thermo<Foam::hConstThermo<Foam::perfectGas<Foam::specie> >, Foam::sensibleEnthalpy>::*)(double, double) const, double (Foam::species::thermo<Foam::hConstThermo<Foam::perfectGas<Foam::specie> >, Foam::sensibleEnthalpy>::*)(double, double) const, double (Foam::species::thermo<Foam::hConstThermo<Foam::perfectGas<Foam::specie> >, Foam::sensibleEnthalpy>::*)(double) const) const at ??:?
[0] #3  Foam::heRhoThermo<Foam::rhoThermo, Foam::pureMixture<Foam::constTransport<Foam::species::thermo<Foam::hConstThermo<Foam::perfectGas<Foam::specie> >, Foam::sensibleEnthalpy> > > >::calculate() at ??:?
[0] #4  Foam::heRhoThermo<Foam::rhoThermo, Foam::pureMixture<Foam::constTransport<Foam::species::thermo<Foam::hConstThermo<Foam::perfectGas<Foam::specie> >, Foam::sensibleEnthalpy> > > >::correct() at ??:?
[0] #5  
[0]  at ??:?
[0] #6  __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
[0] #7

[derekm]

did you do anything to allow for the non-conformal mesh at region boundaries? or is the mesh conformal?

[yeya]

did you solve this problem?