Achieving convergence in model with porouse medium
I have troubles with achieving convergence during computations what can I do? regards

Re: Achieving convergence in model with porouse me
You can do many things to improve convergence. These are some general guidelines:
1) Use a good quality mesh. 2) If you're using a high order discretization scheme, try starting with the first order scheme, then switch to the higher one. 3) Reduce underrelaxation factors. 4) Change solver parameters (sweeps,...). What model are you using? What discretization scheme? And what residuals don't reduce? Hi ap 
Re: Achieving convergence in model with porouse me
I use: steady and ke model first order scheme underrelaxation factors: preasure0,2 momentum0,5 k,e0,6 mesh typehexa

Re: Achieving convergence in model with porouse me
And you can also conpute innitially using a simple Model.When u have got a initial value then u can change your model.I always do it and it works well.

Re: Achieving convergence in model with porouse me
My problem is flow through perforated plate with 45% open.I start computations without turning on "porous zone" and "laminar zone" in Fluid panel in boundary conditions and I achieved convergence. With turned on "laminar zone" I achieved convergence too but I dont't know it's right. Any suggestions? regards

Re: Achieving convergence in model with porouse me
If the problem is the reduction of keps residuals, try to reduce their underrelaxation factors to 0.4.

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