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Forum: OpenFOAM Running, Solving & CFD

January 27, 2009, 14:38

Replies: 218

LES

Views: 58,758

Posted By philippebv

Hi Sungho, The method I des

Hi Sungho,

The method I described was for OF 1.4.1 dev. I think that for version 1.5, you have to edit the controlDict during the simulation, where the fieldAveraging is defined as a function....

Forum: OpenFOAM Running, Solving & CFD

January 27, 2009, 10:31

Replies: 218

LES

Views: 58,758

Posted By philippebv

Hi, In the folder 0.25 , ju

Hi,

In the folder 0.25 , just delete nAveragingSteps.raw (in folder Uniform) and then restart the calculation from that timestep. The averaging should start over.

Good luck,

Philippe

Forum: OpenFOAM Running, Solving & CFD

September 25, 2008, 14:30

Replies: 218

LES

Views: 58,758

Posted By philippebv

Hi, I know I brought this u

Hi,

I know I brought this up before, but I would like to control the position of the switch between the RANS and the LES formulations with the SpalartAllmaras model. It is hard to achieve when...

Forum: OpenFOAM Running, Solving & CFD

September 9, 2008, 13:45

Replies: 218

LES

Views: 58,758

Posted By philippebv

Hi foamers, @ Eugene, what

Hi foamers,

@ Eugene, what would be the correct yPlus values at walls when using nuSgsWallFunction?

Thanks,

Philippe

Forum: OpenFOAM Running, Solving & CFD

September 4, 2008, 08:52

Replies: 218

LES

Views: 58,758

Posted By philippebv

Hi Daniel, I might add that

Hi Daniel,

I might add that a concern for LES is the calculation of delta. Indeed, nuSgs being related to the grid size, the method for the calculation of delta can have great influence. It...

Forum: OpenFOAM Running, Solving & CFD

July 7, 2008, 11:38

Replies: 218

LES

Views: 58,758

Posted By philippebv

Thank you Eugene, I referre

Thank you Eugene,

I referred to your thesis (4.5 Errors and Mesh Refinement) and the smoothed delta indeed makes more sense. I will investigate the smooth option for the LES delta.

Best...

Forum: OpenFOAM Running, Solving & CFD

July 7, 2008, 09:49

Replies: 218

LES

Views: 58,758

Posted By philippebv

Good morning, I used a RANS s

Good morning,
I used a RANS solution to initialize my DES calculation and it solved the convergence problem.

Still, I would like to know how to set delta=max(deltaX,deltaY,deltaZ) instead of...

Forum: OpenFOAM Running, Solving & CFD

July 4, 2008, 09:13

Replies: 218

LES

Views: 58,758

Posted By philippebv

Hi, I'm running LES with th

Hi,

I'm running LES with the oodles solver and the Spalart-Allmaras formulation for the LESmodel. I would like to know which LES delta to use in order to have delta=max(deltaX,deltaY,deltaZ). I...

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