rhoSimplecFoam, solving rho
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 rhoBC the solver ignores it. 
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 
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....

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. 
Thank you very very much, I think that's the solution :).
Best Jason PS: rhoPimpleFoam was not the right solver.... 
All times are GMT 4. The time now is 20:29. 