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Forum: OpenFOAM Bugs November 26, 2009, 14:58
Replies: 12
Views: 3,848
Posted By gocarts
div upwindLinearV scheme requires grad scheme

For div the upwindLinearV (vector) scheme is special in that it also requires a grad scheme hence the addition of 'Gauss Linear'. You don't need to specify a grad scheme for upwindLinear (scalar) -...
Forum: OpenFOAM Bugs November 25, 2009, 16:00
Replies: 12
Views: 3,848
Posted By gocarts
1st vs 2nd Order RSTM

I've found starting each from scratch to produce the fastest convergence rate.

So when I say try 2nd order I mean for the velocity and pressure. I haven't tried 2nd order for the turbulent...
Forum: OpenFOAM Bugs November 24, 2009, 20:28
Replies: 12
Views: 3,848
Posted By gocarts
Yes, I believe you are right u-bends are RSM...

Yes, I believe you are right u-bends are RSM territory.

My experience with fvSchemes isn't extensive. However, the div scheme settings are critical in determining accuracy - if you are using the...
Forum: OpenFOAM Bugs November 24, 2009, 15:51
Replies: 12
Views: 3,848
Posted By gocarts
Initial Velocity Sensitivity

Hi Sven,

I haven't performed detailed comparisons between the turbulence models. However, for a internal flow calculation using simpleFoam (steady-state) I noticed that the Launder Gibson RSTM was...
Forum: OpenFOAM Bugs September 14, 2009, 20:20
Replies: 12
Views: 3,848
Posted By gocarts
Thanks

Hi Mattijs,

Thanks for the update, great work from the OpenCFD team.
Forum: OpenFOAM Bugs September 11, 2009, 17:28
Replies: 12
Views: 3,848
Posted By gocarts
Might be more

Good work mattijs,

I checked the incompressible low-Re incompressible RAS models I mentioned in my previous post and they now seem fine, except for...
Forum: OpenFOAM Bugs September 2, 2009, 12:55
Replies: 12
Views: 3,848
Posted By gocarts
Possible Incompressible Turbulence Model Bugs

I've been evaluating the OpenFOAM 1.6.x incompressible turbulence models and came across possible bugs/anomalies, though they could also be due to my limited understanding.

My test case was a...
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