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Search took 0.00 seconds. Search: Posts Made By: vkrastev
Forum: OpenFOAM July 17, 2013, 06:08
Replies: 58
Views: 27,207
Posted By vkrastev
Hi Joachim, I actually don't know why your...

Hi Joachim,

I actually don't know why your results are so bad, a simple channel should not be any challenge for well tuned RANS models (it is usually one of the standard simplified cases used to...
Forum: OpenFOAM July 9, 2013, 06:05
Replies: 58
Views: 27,207
Posted By vkrastev
Well, in my opinion the high-Re/low-Re...

Well, in my opinion the high-Re/low-Re terminology, when dealing with turbulence modeling in wall-bounded flows, should be applied only to distinguish models which can resolve the viscous sub-layer...
Forum: OpenFOAM July 8, 2013, 08:58
Replies: 58
Views: 27,207
Posted By vkrastev
We have to clarify this point, by distinguishing...

We have to clarify this point, by distinguishing the local and global low-Reynolds number concept. The wall-issue, i. e. turbulence suppression by viscous (and also non-viscous) damping is a local...
Forum: OpenFOAM July 8, 2013, 05:08
Replies: 58
Views: 27,207
Posted By vkrastev
Hi Jonathan, at the moment I don't have time...

Hi Jonathan,

at the moment I don't have time for doing some testing/research work on the SST model, but I'll be happy to share ideas and/or opinions inside this tread. I'll wait for your answers...
Forum: OpenFOAM April 13, 2012, 04:57
Replies: 58
Views: 27,207
Posted By vkrastev
The mesh in question is far too big to upload it,...

The mesh in question is far too big to upload it, and sorry but I don't use dropbox. About the convergence, starting from good p and U field guesses for me it took about 3000 iterations to get fully...
Forum: OpenFOAM April 12, 2012, 11:57
Replies: 58
Views: 27,207
Posted By vkrastev
The case is a quite standard bluff-body benchmark...

The case is a quite standard bluff-body benchmark (the Ahmed model). You can find the fvSchemes and fvSolution which worked fine for me in the attachements. About the BC's and initial conditions, it...
Forum: OpenFOAM February 28, 2012, 06:56
Replies: 58
Views: 27,207
Posted By vkrastev
Ok, I've done my own tests and this is what I've...

Ok, I've done my own tests and this is what I've found:

-test case: external aerodynamics, incompressible, steady-state (simpleFoam solver)
-mesh: about 7 milions of elements, with prismatic...
Forum: OpenFOAM February 19, 2012, 08:12
Replies: 58
Views: 27,207
Posted By vkrastev
Question Why Menter's SST model low-Re issue has not been seriously investigated?

Hi all,
as I'm seemingly not the only one still having trouble with Menter's model run in low-Re mode, I think it can be a good idea to restart a tread about this matter. A good starting point can...
Showing results 1 to 8 of 8

 
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