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Forum: OpenFOAM Programming & Development

May 9, 2014, 04:25

Replies: 9

Questions to utility yPlusLES

Views: 2,698

Posted By cosimobianchini

Hi Elisabeth and Qin, 1) nuLam is introduced...

Hi Elisabeth and Qin,
1) nuLam is introduced due to y+ definition which is based on a comparison between effective shear on the wall and laminar viscosity.
2) if your time-averaged y+ is well below...

Forum: OpenFOAM Programming & Development

March 21, 2014, 04:44

Replies: 9

Questions to utility yPlusLES

Views: 2,698

Posted By cosimobianchini

1) This is to deal with wall-function approach....

1) This is to deal with wall-function approach. In your case at the wall mu_eff = mu so you could use it in both terms without errors but for wall function approach mu_eff != mu so it is more robust...

Forum: OpenFOAM Programming & Development

March 17, 2014, 11:43

Replies: 9

Questions to utility yPlusLES

Views: 2,698

Posted By cosimobianchini

1) agree with Bruno 2) y+ should not be...

1) agree with Bruno
2) y+ should not be calculated with mean velocity. However for RANS UMean = U (wether you resolve or resolve the viscous sublayer is not important: this is handled by different...

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