Tutorial 2D Turbulent flow Model k-e is diverge

[Ahmed 7afezz]

I tried the 2D turbulent back-step flow model which in tutorial and i followed all the steps but the solution didn't converged and diverge from 1st iteration
SIF file is here please any one help me.

[kevinarden]

Not sure which tutorial you are referring to. Can you specify the tutorial manual name and number? or post your mesh along with the sif? This way it can be investigated further.

[Ahmed 7afezz]

Thanks for your reply
I solved it
but i confused for something when i solve any steady turbulent model with single core the solution will converge and if i used parallel core the solution will diverge why?????

[mika]

An iterative solution of the same linear system may fail in parallel although the same solver parameters (the same sif file) lead to the solution in a serial run. Typically this may happen when an algebraic preconditioner (for example ILUn) is applied, since Elmer computes a different preconditioner when switching to parallel computation. There is not enough information to say whether your trouble relates to different behaviours of linear solvers.

-- Mika