Maximum Number of Iteration exceeded
 

Hello Everybody,

I am trying to solve supersonic flow over backstep using rhoCentralFoam and sonicFoambut I m faced with this strange problem :

The error is:
--> FOAM FATAL ERROR : Maximum number of iterations exceeded

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/liu/OpenFOAM/OpenFOAM-1.2/src/thermophysicalModels/specie/lnInclude/specie ThermoI.H at line 83.

FOAM aborting

Looking forward to constructive suggestions.

Thanks
Rahul

Hi Rahul,

Are you creating your mesh with some other software and importing it to OpenFoam?

Hello kilroy,

Thanks for posting, I am creating mesh in gambit.

You may want to look into Dinesh's post below:

http://www.cfd-online.com/Forums/ope...tml#post242848

"This problem came when I was using the number of interval more than 150 or so, in gambit, the exported mesh to OpenFoam was showing that error message i. e ..Maximum number of iterations exceeded..bla bla.......
before this it was running upto clock time 5 or 6 and than the error message. If I change the mesh intervals, the clock time of getting that massage had been changing accordingly. When I change the mesh intervals in gambit in 100 it worked i.e upto requried time ( ..which I had set in controlDict .....

Conclusion : change (decrease) the mess interval count in gambit. the exported mesh shall let u find the way...."

Hope this helps,

Kilroy

Hi

I have aleardy referred to this post, however I had no luck.

Thanks
Rahul

Rahul,

Have you ever tried creating your own mesh by OpenFoam's utilities (blockMesh, snappyHexMesh, etc.)?

Hi,

I haven't tried that, but there's guy in my lab he works with that and he too faced similar problem.

Thanks
Rahul