Talk:Turbulence modeling

Eddy Viscosity
I think the eddy viscosity was proposed by Boussinesque. --Vladimír Fuka 16:11, 10 April 2006 (UTC)

I thought l is the mixing length, NOT necessarily the distance to the wall. Prandtl proposed that l = k*y, where y is the distance to the wall. I believe this equation might be incorrect as is; it should not have the factor k in it. I'm using Mills: Heat Transfer, specifically the section on turbulence modeling (5.5 - equation 5.120).

Yes I confirm, the eddy viscosity was proposed by Boussinesque. l is the mixing length, NOT the distance to the wall. Prandtl proposed that l = kappa*y, where y is the distance to the wall and kappa=0,4. The equation in "wikipedia : turbulence modeling" IS INCORRECT; it should not have the factor kappa in it.

This article and the section in the CFD article
This article should probably by integrated with the section on turbulence models in the article on computational fluid dynamics. -- Ehdr 18:52, 16 March 2007 (UTC)
 * Agreed. CFD article at least provides an organized presentation and a context for turbulence models. I see no reason why this article should exist.  If it had particularly useful information, I wouldn't argue for its deletion, but the CFD article gives a basic summary of major turbulence models, and links to the wikipedia articles for each.  I see no place for this article, as it basically serves the same role - describes turbulence models, and (I presume, if it covered more turbulence models in a more comprehensive way) would redirect readers to the main page of each turbulence model. --Charlesreid1 (talk) 08:46, 6 November 2010 (UTC).That means

Stub tag
I think this article needs a lot of work because the mixing-length model is a mere "scratching of the surface", with regard to turbulence modelling. Discussion of the mixing-length model should be a springboard into the topics of $$k-\varepsilon$$ models and rapid-distortion theory. See, for example, the comprensive list of topics at http://www.cfd-online.com/Wiki/Turbulence_modeling. I will try to work on this if I have time.

Also, I disagree with the previous comment. This is a stand-alone article whose contents should be briefly introduced in the CFD article (this is already well done). The reader should then be directed to this page.Onaraighl (talk) 17:32, 15 August 2008 (UTC)


 * I agree with Onaraighl. This is article right now is scratching the surface of the Spalart-Allmaras model, and should also mention the many other models such as k-$$\omega$$, k-$$\epsilon$$, and LES. I just wrote a thesis on the first two (luckily in LaTeX so I have all the equations written out), and will likely be adding alot of that content to this page. MasterHD (talk) 22:32, 12 April 2010 (UTC)


 * Disagree. This page should not contain detailed information about each turbulence model.  Detailed information about large eddy simulation should go on the large eddy simulation page.  Detailed information about RANS should go on the RANS page.  Etc.  The computational fluid dynamics page gives a brief summary of each turbulence model, and redirects readers to the relevant page for each turbulence model.  This completely bypasses this turbulence modeling page, as it should.  The only purpose this page serves duplicates the purpose that the "Turbulence models" section of the CFD page serves.  IMO, this page should redirect to the Turbulence modeling section of the CFD page. --Charlesreid1 (talk) 08:49, 6 November 2010 (UTC)

Vote for/against article deletion
I would like to put the deletion of this article to a vote. I will provide justification for deletion, others in favor of keeping the article may provide justification for keeping it.

See Deletion_policy for Wikipedia policy on deletion. Issue must be discussed for at least 7 days.

Discussion has been moved to Articles_for_deletion/Turbulence_modeling


 * Oppose Articles are not deleted in this way. Please see WP:AFD for the correct process. Colonel Warden (talk) 17:20, 6 November 2010 (UTC)
 * OK, following instructions at WP:AFD, I have used subst:afd1 instead of prod. Moving discussion on deletion to Articles_for_deletion/Turbulence_modeling. --Charlesreid1 (talk) 17:39, 6 November 2010 (UTC)


 * Oppose I think that turbulence modelling is an area of the study of turbulence vast enough to deserve its proper article. I can say, for example that a 'positioning' of different models, with respect to the hierarchy of mouvement equations (Friedmann Keller Hierarchy) is very useful; Lumley's invariant modelling is rarely mentioned in other articles and almost never explained, being tubulence modeling one of its main uses, at least some explanation could be posted here. Crodrigue1 (talk) 00:27, 10 February 2018 (UTC)