# Reynolds stress derivatives

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 November 21, 2008, 06:50 Reynolds stress derivatives #1 Amine Guest   Posts: n/a Hi, I want to know how can I access to the Reynolds Stress Derivatives ? (I am using RSM model in Fluent) Is there macros for that in Fluent? Thank's

 November 21, 2008, 10:01 Re: Reynolds stress derivatives #2 Amine Guest   Posts: n/a I think I've a solution using the UDSI !! I need only the derivatives: Duv/dy and DuČ/dy, uv and vČ are the reynolds stresses. I would like to use them in the DPM_define_bodyforce function, here is a solution, but I am not sure that it will be working: real DuvDy, DvvDy; C_UDSI(c,t,0) = C_RUV(c,t); C_UDSI(c,t,1) = C_RVV(c,t); DuvDy = C_UDSI_G(c,t,0) [1]; DvvDy = C_UDSI_G(c,t,1) [1]; and deselcting for solving equations for UDS0 and UDS1!! What do you think about ?

 November 27, 2008, 11:11 Re: Reynolds stress derivatives #3 Amine Guest   Posts: n/a It works, So you know now how you can calculate the Reynolds stress or any scalar Derivatives. Don(t forget to deselect for solving transport equation for the UDS !!

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