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Forum: OpenFOAM Running, Solving & CFD

April 18, 2009, 05:56

Replies: 7

Hybrid RANS LES

Views: 2,928

Posted By braennstroem

Hi, thanks Walter for the info! I wonder how...

Hi,

thanks Walter for the info! I wonder how it works for the 'classical' DES using Spalart-Allmaras!?

Maybe another way to enhance convergence could be the use of 'localBlended' scheme, which...

Forum: OpenFOAM Running, Solving & CFD

March 25, 2009, 02:18

Replies: 7

Hybrid RANS LES

Views: 2,928

Posted By braennstroem

Hi, does anyone have suggestions for flow...

Hi,

does anyone have suggestions for flow initialization for hybrid methods?
I just read a presentation of Strelets/DES Workshop, St.-Petersburg, 2003, where he mentions different ways to shorten...

Forum: OpenFOAM Running, Solving & CFD

September 18, 2008, 10:51

Replies: 7

Hybrid RANS LES

Views: 2,928

Posted By braennstroem

Hi Gavin, Thanks! There are

Hi Gavin,

Thanks! There are actually a lot of different hybrid LES/RANS approaches; some blend the viscosity, e.g. some reduce the RANS viscosity in some way and other just scale it.

I...

Forum: OpenFOAM Running, Solving & CFD

September 18, 2008, 09:01

Replies: 7

Hybrid RANS LES

Views: 2,928

Posted By braennstroem

Hi, me again :-) A slightl

Hi,
me again :-)

A slightly different problem is the whole combination of existing RASModels and LESModels. E.g. for a implementation of the SST-SAS RASmodel (it lowers the turbulent kinetic...

Forum: OpenFOAM Running, Solving & CFD

August 12, 2008, 15:13

Replies: 7

Hybrid RANS LES

Views: 2,928

Posted By braennstroem

Hi, I am wondering, how one w

Hi,
I am wondering, how one would implement simple forcing into a hybrid RANS/LES approach. Would one create a cellset according to a given field (which could be defined by some coordinates or a...

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