|
[Sponsors] |
![]() |
![]() |
#1 |
New Member
Jason
Join Date: Aug 2011
Posts: 10
Rep Power: 15 ![]() |
Hi,
I've got a problem with rhoSimplecFoam. I got a case which is quite similar to the squareBend in the tutorials but with symmetryPlanes on each side. My problem is, that although I copied all BCs, the solver won't solve rho. It says "rho max/min : 1 1" in each time step. But when I run squareBend it solves rho perfectly. Any ideas where my problem could be? Thanks a lot. Best regards Jason Edit: And I can't edit rho in any way, too. If I create a rho-BC the solver ignores it. |
|
![]() |
![]() |
![]() |
![]() |
#2 |
New Member
Jason
Join Date: Aug 2011
Posts: 10
Rep Power: 15 ![]() |
Hi,
I now know where the problem is. The temperature in my case is quite low, so the initial density would be >1. But somehow the solver doesn't solve densities above 1. I tried different temperatures and it all works fine with densities <1 but as soon as I get values above 1, the value is fixed at 1. Although I know the problem, I don't know the solution. Have you got any ideas? I would be very tankful. Best Jason |
|
![]() |
![]() |
![]() |
![]() |
#3 |
New Member
Jason
Join Date: Aug 2011
Posts: 10
Rep Power: 15 ![]() |
I now switched to rhoPimpleFoam because it solves the density correctly. It's not the solution for the problem but it's ok for now....
|
|
![]() |
![]() |
![]() |
![]() |
#4 |
Member
|
Maybe you forgot changing the rhoMax entry in the SIMPLE subDict of the fvSolution dictionary
SIMPLE { nNonOrthogonalCorrectors 0; rhoMin rhoMin [1 -3 0 0 0] 0.1; rhoMax rhoMax [1 -3 0 0 0] 1.0; transonic yes; } If you will put reasonable values for your case I do not doubt that the solution will show the actual density values.
__________________
Cosimo Bianchini Ergon Research s.r.l. Via Panciatichi, 92 50127 Florence - ITALY Tel: +39 055 0763716 Mob: +39 320 9460153 e-mail: cosimo.bianchini@ergonresearch.it URL: www.ergonresearch.it |
|
![]() |
![]() |
![]() |
![]() |
#5 |
New Member
Jason
Join Date: Aug 2011
Posts: 10
Rep Power: 15 ![]() |
Thank you very very much, I think that's the solution
![]() Best Jason PS: rhoPimpleFoam was not the right solver.... |
|
![]() |
![]() |
![]() |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
Moving mesh | Niklas Wikstrom (Wikstrom) | OpenFOAM Running, Solving & CFD | 122 | June 15, 2014 06:20 |
Orifice Plate with a fully developed flow - Problems with convergence | jonmec | OpenFOAM Running, Solving & CFD | 3 | July 28, 2011 05:24 |
Differences between serial and parallel runs | carsten | OpenFOAM Bugs | 11 | September 12, 2008 11:16 |
IcoFoam parallel woes | msrinath80 | OpenFOAM Running, Solving & CFD | 9 | July 22, 2007 02:58 |
Could anybody help me see this error and give help | liugx212 | OpenFOAM Running, Solving & CFD | 3 | January 4, 2006 18:07 |