Hey, I am solving the inco
 

Hey,

I am solving the incompressible, turbulent flat plate. The problem itself is of the steady-state type. As for now, I used the transient solver turbFoam. I think I could also use SimpleFoam, which is a steady-state solver.

I have a question/problem related to this. I want to run the case and make it stop if the changes in the state variables (p,U,k,etc) drop below a certain user-specified threshold. My runs with turbFoam stopped if an endtime was reached. Running it with simpleFoam needs a specific number of iterations. Is there a way in SimpleFoam to specify as stopping criterium a tolerance instead of a number of runs?

[Note that I am not speaking about the tolerances of the linear solver.]

A second question, should there be a difference in the (assume converged) solution if the same case is solved with turbFoam or simpleFoam? I don't know about the implementation, but aren't you using a physical time in a steady-state solver instead of the physical time? Hence, in the end, the time derivatives of the transient solver should vanish. I do believe, however that the steady-state solver will go faster to the converged solution. Is this correct?

Any help is greatly appreciated!

PJ

Did you check the message boar
 

Did you check the message board for previous posts dealing with convergence criteria?
I know that I've already posted a possible solution to this several times. The last one within the past few weeks (again).