[msrinath80]

For some very fine mesh problems I need to increase the maximum iteration limit from 1001 to say, 1500.

Can someone tell me where I can find this 1001 iteration limit so that I can change it to suit my needs. Specifically which source or header file?

Thanks!

[andersking]

All the solver controls live in

system/fvSolution

Cheers,
Andrew

[dmoroian]

Hi Srinath,
Try here:

OpenFOAM/lnInclude/lduMatrixSolver.C: maxIter_(1000)

I hope is helpful,
Dragos

[andersking]

Hi Dragos, Srinath,

The maxIter value in the source should be overwritten with the one read from the fvSolution file, as far as I am aware. These must be specified in OF-1.4.1 (at least I've had a lot of errors when they weren't). This goes for minIter too.
No recompilation needed.

Cheers
Andrew

[dmoroian]

... Of course, you're right Andrew!
This happens when I try to be too "smart" !

[msrinath80]

The solvers section from fvSolution in the cavity case of OF 1.4.1 contains the following:

solvers
{
p PCG
{
preconditioner DIC;
tolerance 1e-06;
relTol 0;
};

U PBiCG
{
preconditioner DILU;
tolerance 1e-05;
relTol 0;
};
}

Where is the maxiterations to be specified and what is the keyword and format?

[andersking]

Hi Srinath,

just add
maxIter 1000;
minIter 0;
after the relTol line in both solvers, (before the };)

Of course, change 1000 to be whatever new maximum you would like.

Cheers
Andrew

[msrinath80]

Thanks Andrew!