# Turbulence length scale

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 March 27, 2011, 19:00 Turbulence length scale #1 New Member   Join Date: Mar 2011 Posts: 3 Rep Power: 6 Hi fellows, I am simulating the flow past a 3D wing using k-omega in order to compare results with an experimentation made with the S2MA ONERA wind tunnel. As the ONERA didn't specify anything concerning the turbulence factor, we need to estimate it. The Fluent User guide give some indication dealing with the turbulence factor but I still have some trouble using it. My questions are the following -Is it the same to use either Turbulence intensity/Turbulence scale factor or k/omega? It seems so when having a look to the solution initialization, but I want to be sure .. -For the turbulence length scale, I am using the formula which gives us turbulence based on the boundary layer thickness introduce at the inlet.The boundary layer thickness has to be the laminar or the turbulent one? Those questions were dealing with a pressure far field Now, how do we actually define the turbulence near a wall? I hope my questions are clear enough for you to give me some clues. Many thanks leon

November 30, 2011, 12:22
#2
Member

Sheng
Join Date: Jun 2011
Posts: 58
Rep Power: 6
Quote:
 Originally Posted by Leonpolou Hi fellows, I am simulating the flow past a 3D wing using k-omega in order to compare results with an experimentation made with the S2MA ONERA wind tunnel. As the ONERA didn't specify anything concerning the turbulence factor, we need to estimate it. The Fluent User guide give some indication dealing with the turbulence factor but I still have some trouble using it. My questions are the following -Is it the same to use either Turbulence intensity/Turbulence scale factor or k/omega? It seems so when having a look to the solution initialization, but I want to be sure .. -For the turbulence length scale, I am using the formula which gives us turbulence based on the boundary layer thickness introduce at the inlet.The boundary layer thickness has to be the laminar or the turbulent one? Those questions were dealing with a pressure far field Now, how do we actually define the turbulence near a wall? I hope my questions are clear enough for you to give me some clues. Many thanks leon

Did you solve your problem eventually?

 January 23, 2013, 08:26 malik #3 New Member   malik Join Date: Nov 2012 Posts: 19 Rep Power: 4 Hi, Can anyone plz send me the 3D mesh of ONERA M6 wing that i can open in ICEM. I need both coarse and fine mesh. I am in urgent need. My email is s.malik.eng@gmail.com Many thanks in advance

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