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Forum: OpenFOAM Running, Solving & CFD January 2, 2008, 23:55
Replies: 41
Views: 10,726
Posted By msrinath80
Alessandro, Thanks for sharing

Alessandro, Thanks for sharing your experience. Maybe one of these days I will get my faith in turbulence models back :-)
Forum: OpenFOAM Running, Solving & CFD January 2, 2008, 20:27
Replies: 41
Views: 10,726
Posted By msrinath80
Of course transient. Turbulent

Of course transient. Turbulent vortex shedding is clearly evident. And please don't even try to expect a good agreement with *anything* when using turbulence models. Your best bet is using LES.
Forum: OpenFOAM Running, Solving & CFD December 20, 2007, 18:48
Replies: 41
Views: 10,726
Posted By msrinath80
Alright. As long as the boundi

Alright. As long as the bounding epsilon messages don't keep surfacing I think it's ok. If you would like the sum local, global and cumulative to drop further, converge the pressure more tightly...
Forum: OpenFOAM Running, Solving & CFD December 20, 2007, 18:08
Replies: 41
Views: 10,726
Posted By msrinath80
How many non-orthogonal correc

How many non-orthogonal correctors do you have? Also what does time-step continuity error show?
Forum: OpenFOAM Running, Solving & CFD December 20, 2007, 18:02
Replies: 41
Views: 10,726
Posted By msrinath80
Neat. I wonder whether this ss

Neat. I wonder whether this ssimpleFoam solver you refer to derives its force calculation routines from liftDrag or someone wrote it from scratch.
Forum: OpenFOAM Running, Solving & CFD December 19, 2007, 17:43
Replies: 41
Views: 10,726
Posted By msrinath80
Yup your boundaries are messed

Yup your boundaries are messed up. It's like a lid-driven cavity problem now with three moving walls and one outlet? Check if your boundaries are what you think they should be by opening the mesh in...
Forum: OpenFOAM Running, Solving & CFD December 18, 2007, 16:55
Replies: 41
Views: 10,726
Posted By msrinath80
Careful with the Y+ though. If

Careful with the Y+ though. If you use wall functions, there are limitations. If on the other hand you are running pure Navier-stokes, refinement is the way to go (assuming you are doing DNS).
Forum: OpenFOAM Running, Solving & CFD December 18, 2007, 01:02
Replies: 41
Views: 10,726
Posted By msrinath80
Nice. Very nice. You certainly

Nice. Very nice. You certainly do know what you're doing http://www.cfd-online.com/OpenFOAM_Discus/clipart/happy.gif Dig around the gmsh posts in this forum, you may pick up some useful pointers for...
Forum: OpenFOAM Running, Solving & CFD December 17, 2007, 19:33
Replies: 41
Views: 10,726
Posted By msrinath80
Indeed, you need a much finer

Indeed, you need a much finer mesh. Check out this thread[1].

http://www.cfd-online.com/OpenFOAM_Discus/messages/1/5708.html?1192703387
Forum: OpenFOAM Running, Solving & CFD December 17, 2007, 17:07
Replies: 41
Views: 10,726
Posted By msrinath80
Also, what Frank suggests is v

Also, what Frank suggests is very logical. I would also recommend that you start off with low Re, validate your Cd/Cl calculation and then progress to higher Re. Frank has performed comprehensive...
Forum: OpenFOAM Running, Solving & CFD December 17, 2007, 17:03
Replies: 41
Views: 10,726
Posted By msrinath80
Yup, got it. Sorry I have not

Yup, got it. Sorry I have not had a chance to look at it. I am at work right now. I'll give it a looksie once I'm at home. By the way I noticed that your Re is far from the laminar regime. I almost...
Forum: OpenFOAM Running, Solving & CFD December 14, 2007, 01:15
Replies: 41
Views: 10,726
Posted By msrinath80
Pack your case and post it her

Pack your case and post it here or email it to me. I will look into it. My email address is available in my profile.
Forum: OpenFOAM Running, Solving & CFD December 13, 2007, 23:22
Replies: 41
Views: 10,726
Posted By msrinath80
"I've recently been trying to

"I've recently been trying to verify the force outputs of the 'ssimpleFoam' solver I got from another thread on this forum, it's essentially the simpleFoam solver which computes and outputs forces in...
Forum: OpenFOAM Running, Solving & CFD December 13, 2007, 20:07
Replies: 41
Views: 10,726
Posted By msrinath80
Additional resources: http

Additional resources:

[1] http://www.cfd-online.com/OpenFOAM_Discus/messages/1/2726.html

[2] http://www.cfd-online.com/OpenFOAM_Discus/messages/1/2320.html

[3]...
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