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Search took 0.00 seconds. Search: Posts Made By: henry
Forum: OpenFOAM Bugs November 16, 2009, 04:47
Replies: 21
Views: 6,774
Posted By henry
Thank you for performing these rigorous...

Thank you for performing these rigorous comparison tests; it is always useful to have our developments independently checked in the way.

Concerning the comparison with DNS we have also noticed...
Forum: OpenFOAM Bugs November 12, 2009, 03:51
Replies: 21
Views: 6,774
Posted By henry
It would also be interesting to re-check the...

It would also be interesting to re-check the results with van Driest damping and sufficient averaging. If those results are still dissimilar we will investigate in detail.

Thanks

H
Forum: OpenFOAM Bugs November 6, 2009, 07:09
Replies: 21
Views: 6,774
Posted By henry
Note that the Smagorinsky coefficients set in the...

Note that the Smagorinsky coefficients set in the LESProperties file in the 1.5 tutorial case are not the same as the high-Re default values in the 1.6 code and to make the case run the same you will...
Forum: OpenFOAM Bugs November 6, 2009, 07:05
Replies: 21
Views: 6,774
Posted By henry
cubeRootVolDelta is purely geometric as it is...

cubeRootVolDelta is purely geometric as it is simply the cube-root of the cell volumes.

H
Forum: OpenFOAM Bugs November 6, 2009, 06:42
Replies: 21
Views: 6,774
Posted By henry
It would be useful to know if the difference in...

It would be useful to know if the difference in behavior is related to the use of the van Driest damping function; could you try with a purely geometric delta?

H
Forum: OpenFOAM Bugs November 6, 2009, 03:44
Replies: 21
Views: 6,774
Posted By henry
I am not convinced that 5000 time steps is enough...

I am not convinced that 5000 time steps is enough either for the start-up period or for the averaging. Could you look at the evolution of the averaged solution for both to check this? Could you...
Forum: OpenFOAM Bugs November 5, 2009, 06:54
Replies: 21
Views: 6,774
Posted By henry
The fields provided in the tutorial case are VERY...

The fields provided in the tutorial case are VERY old and should not be considered consistent with the current solvers. They are provided to avoid the need to run the case from a laminar flow...
Forum: OpenFOAM Bugs November 5, 2009, 04:28
Replies: 21
Views: 6,774
Posted By henry
Changing the location of the LES model correction...

Changing the location of the LES model correction will affect the temporal truncation error and hence the solution. If you want to make sure the solution is independent of this choice you could add...
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