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Forum: OpenFOAM Running, Solving & CFD

July 18, 2013, 12:21

Replies: 48

Wall treatment with OpenFOAM

Views: 49,370

Posted By Jonathan

hi Crossley my understanding is that...

hi Crossley

my understanding is that LowReWallFunction was instituted by the OF developers to be used as the BC for nut with low Reynolds turbulence models on y+ ~1 meshes.

If you look at the...

Forum: OpenFOAM Running, Solving & CFD

September 19, 2012, 05:02

Replies: 48

Wall treatment with OpenFOAM

Views: 49,370

Posted By Jonathan

hi 1/153! thanks for your comments - no prob...

hi 1/153!

thanks for your comments - no prob about your english! its good!!

i have thought about this overnight, and actually gone back to the theory and a couple papers to as well, and i think...

Forum: OpenFOAM Running, Solving & CFD

September 18, 2012, 12:44

Replies: 48

Wall treatment with OpenFOAM

Views: 49,370

Posted By Jonathan

hi 1/153 ok! yes, i see and understand + you...

hi 1/153

ok! yes, i see and understand + you make good points!

however, again, as far as i understand, the low Re models do account for the near wall dynamics using damping functions etc. I...

Forum: OpenFOAM Running, Solving & CFD

September 18, 2012, 10:44

Replies: 48

Wall treatment with OpenFOAM

Views: 49,370

Posted By Jonathan

hi! hmmm, i am still confused ... :) if...

hi!

hmmm, i am still confused ... :)

if when using eddy viscosity models (k-epsilon, k-omega, k-e RNG etc):
\nu_t = \rho C_\mu \frac{k^2}{\epsilon} (k-e) or
\nu_t = \rho \frac{k}{\omega}...

Forum: OpenFOAM Running, Solving & CFD

September 18, 2012, 07:09

Replies: 48

Wall treatment with OpenFOAM

Views: 49,370

Posted By Jonathan

Hi, So, if you are using a turbulence model...

Hi,

So, if you are using a turbulence model which has low Re capability, you need to use nutLowReWallFunction as a place holder in the 'nut' dictionary file?

the confusion for me comes in when...

Forum: OpenFOAM Running, Solving & CFD

June 1, 2012, 14:30

Replies: 48

Wall treatment with OpenFOAM

Views: 49,370

Posted By Jonathan

Hi Roby, just wondering whether you had...

Hi Roby,

just wondering whether you had gotten any further with this query of yours ... i am currently investigating the same thing!

cheers
jonathan

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