|October 29, 2003, 03:14||
Dealing with a flow in a filter kind of domain, I use permeable baffles to completely separate two regions. There should be a certain pressure drop across the baffles, which I know from experimental data. If I calculate with very low values of Ares and Bres (pressure drop not sensible), I get good solutions. Increasing the values of Ares and Bres, I get more and more of Warning #038, which is
UNNORMALIZED RESIDUAL CANNOT BE REDUCED TO 1.0000000E-6 IN EQN: PCOR.
I guess thats the pressure correction equation. Strange is, that in a special range of Ares and Bres, the warnings appear not every iterations, so that some of them will be used to update the field.
My questions are:
- What is exactly happening, or not happening in the iterations with that warning.
- Is there a chance to modify that value of delta = 1.0E-6 for some iterations.
- Do you see a different way of solving that problem
Thanks in advance,
|Thread||Thread Starter||Forum||Replies||Last Post|
|Permeable wall BC||billy||OpenFOAM Pre-Processing||7||August 27, 2009 02:05|
|Permeable wall||billy||OpenFOAM Running, Solving & CFD||0||August 29, 2006 18:11|
|Pipe flow with permeable walls||Malama, Bwalya||Main CFD Forum||2||August 29, 2001 11:15|
|permeable wall||peter.zhao||Main CFD Forum||0||October 23, 2000 08:06|
|permeable wall||Sebastien DANIEL||FLUENT||5||July 27, 2000 02:31|