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Search took 0.00 seconds. Search: Posts Made By: RodriguezFatz
Forum: OpenFOAM Running, Solving & CFD December 2, 2014, 02:35
Replies: 37
Views: 7,616
Posted By RodriguezFatz
Ok, It doesn't work either. I give up... maybe...

Ok, It doesn't work either. I give up... maybe someone else can help.
Forum: OpenFOAM Running, Solving & CFD November 28, 2014, 06:12
Replies: 37
Views: 7,616
Posted By RodriguezFatz
Daniel, after struggling that much without any...

Daniel, after struggling that much without any outcome I try something different: I changed the boundary conditions from cyclic to mapped. I also made a thread about cyclic pipes for a different bur...
Forum: OpenFOAM Running, Solving & CFD November 27, 2014, 03:31
Replies: 37
Views: 7,616
Posted By RodriguezFatz
Daniel, I put the case on our server and let it...

Daniel, I put the case on our server and let it run. I couldn't find any obvious mistake. You still need to wait a bit.
Forum: OpenFOAM Running, Solving & CFD November 19, 2014, 03:25
Replies: 37
Views: 7,616
Posted By RodriguezFatz
Yes, I think thats right.

Yes, I think thats right.
Forum: OpenFOAM Running, Solving & CFD November 19, 2014, 03:18
Replies: 37
Views: 7,616
Posted By RodriguezFatz
Yes, here it is. 35288 Can you...

Yes,

here it is.
35288

Can you upload your mesh somewhere?
One thing: In your first pictures you show a turbulent profile (from one-eq. model), in your last pictures this looks like a...
Forum: OpenFOAM Running, Solving & CFD November 18, 2014, 03:17
Replies: 37
Views: 7,616
Posted By RodriguezFatz
But does it work now, with a correct mesh? ...

But does it work now, with a correct mesh?

Btw: You need to change p solver to GAMG as I wrote above...
Forum: OpenFOAM Running, Solving & CFD November 18, 2014, 03:16
Replies: 37
Views: 7,616
Posted By RodriguezFatz
Daniel, at least for the one-Equation model: You...

Daniel, at least for the one-Equation model: You try to do wall resolved LES, right? I am not an expert for that, but I don't think you can set k to zeroGradient at the walls, you need k=0.
For the...
Forum: OpenFOAM Running, Solving & CFD November 17, 2014, 07:10
Replies: 37
Views: 7,616
Posted By RodriguezFatz
As far as I know, mesh orthogonality shows the...

As far as I know, mesh orthogonality shows the maximum angle between two cell-face and cell-center lines. Yours shows an angle of 180 degree, which means that something is really fucked up. Not just...
Forum: OpenFOAM Running, Solving & CFD November 14, 2014, 03:30
Replies: 37
Views: 7,616
Posted By RodriguezFatz
Yes, indeed. For a simple pipe like you meshed it...

Yes, indeed. For a simple pipe like you meshed it you should get something like:
Mesh non-orthogonality Max: 39.1121 average: 6.23583
Non-orthogonality check OK.
Forum: OpenFOAM Running, Solving & CFD November 13, 2014, 02:38
Replies: 37
Views: 7,616
Posted By RodriguezFatz
Daniel, when I have a look into the equations of...

Daniel, when I have a look into the equations of oneEqEddy model, I see the source term is

volScalarField G(GName(), 2.0*nuSgs_*magSqr(symm(gradU)));
Thus, if you don't initialize your case with...
Forum: OpenFOAM Running, Solving & CFD November 12, 2014, 02:35
Replies: 37
Views: 7,616
Posted By RodriguezFatz
Daniel, 1) Turbulence is produced by the flow....

Daniel,
1) Turbulence is produced by the flow. So there is no need for any special initialization to get turbulence at all. The only exception that I know is, when you solve equations for turbulence...
Forum: OpenFOAM Running, Solving & CFD November 11, 2014, 03:30
Replies: 37
Views: 7,616
Posted By RodriguezFatz
This is a picture of a pipe flow just as you do,...

This is a picture of a pipe flow just as you do, but with higher Re and wall modeled LES. It was initialized without any turbulence.
34955

This is a picture of the kinetic energy (perpendicular...
Forum: OpenFOAM Running, Solving & CFD November 11, 2014, 02:52
Replies: 37
Views: 7,616
Posted By RodriguezFatz
Daniel, you don't need to initialize the...

Daniel, you don't need to initialize the turbulence... it should be just much faster to get convergence. I didn't initialize it and get some nice LES of a periodic pipe.
I can recommend to track...
Forum: OpenFOAM Running, Solving & CFD November 10, 2014, 03:10
Replies: 37
Views: 7,616
Posted By RodriguezFatz
Hey Daniel, 1) Please post some of the log...

Hey Daniel,

1) Please post some of the log output of your run.
2) What is the x+ resolution of your mesh?
3) With y+=1, I guess, you don't use any wall functions?
Showing results 1 to 14 of 14

 
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