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Forum: OpenFOAM Running, Solving & CFD June 21, 2012, 10:21
Replies: 64
Views: 23,313
Posted By lakeat
Last time, I used a very very small time step to...

Last time, I used a very very small time step to keep it stable. :(
Forum: OpenFOAM Running, Solving & CFD April 11, 2012, 17:39
Replies: 64
Views: 23,313
Posted By lakeat
The last time I used it, I used it with a VERY...

The last time I used it, I used it with a VERY VERY small time step on the LRN
mesh and then everything works fine.

It seems all LRN models have convergence problem.
Forum: OpenFOAM Running, Solving & CFD January 24, 2012, 09:13
Replies: 64
Views: 23,313
Posted By lakeat
Actually, I tried yesterday night for a few...

Actually, I tried yesterday night for a few times, but got a worse curve.:D
Forum: OpenFOAM Running, Solving & CFD January 21, 2012, 15:19
Replies: 64
Views: 23,313
Posted By lakeat
Correction: I dont know if it really needs to be...

Correction: I dont know if it really needs to be limited. I am struggling testing with some other convection schemes.
Forum: OpenFOAM Running, Solving & CFD January 20, 2012, 10:30
Replies: 64
Views: 23,313
Posted By lakeat
1. Turbulence; 2. (Re-)Attached or Separated...

1. Turbulence;
2. (Re-)Attached or Separated Turbulence;

And IMO, I think the three-equation model still needs extensive tests, and it needs to be bounded.

(Chinese) 新年快乐！
Forum: OpenFOAM Running, Solving & CFD January 16, 2012, 13:38
Replies: 64
Views: 23,313
Posted By lakeat
And also a reminder, that I found the following...

And also a reminder, that I found the following utility (http://www.cfd-online.com/Forums/openfoam/86562-y-u-values-low-re-rans-turbulence-models-utility-testcase-2.html) is needed for using these...
Forum: OpenFOAM Running, Solving & CFD January 13, 2012, 12:13
Replies: 64
Views: 23,313
Posted By lakeat
Thanks, that's exactly what I have set right now....

Thanks, that's exactly what I have set right now.

But just for a future discussion.

I have done a lot of tests, and generally
I found kklOmega works well when it can work. But I found it do...
Forum: OpenFOAM Running, Solving & CFD January 11, 2012, 16:33
Replies: 64
Views: 23,313
Posted By lakeat
Anyone knows how to set the boudndary condition...

Anyone knows how to set the boudndary condition for kl and kt?

For now I just copy k file and then rename to kl and kt.

I am running a square case, and so far , the strouhal number, the mean...
Showing results 1 to 8 of 8

 
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