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-   -   arrangement of stresses and fluxes in staggered system (http://www.cfd-online.com/Forums/main/102223-arrangement-stresses-fluxes-staggered-system.html)

challenger149 May 25, 2012 07:38

arrangement of stresses and fluxes in staggered system
 
Hi all,
I was wondering if anyone can explain the location and arrangement of stresses and fluxes in staggered FV...

thanks in advance

FMDenaro May 25, 2012 09:47

Quote:

Originally Posted by challenger149 (Post 363093)
Hi all,
I was wondering if anyone can explain the location and arrangement of stresses and fluxes in staggered FV...

thanks in advance


see the book of Peric & Ferziger

challenger149 May 25, 2012 10:06

thank you FMDenaro but in the book, only pressure and velocity arrangements are mentioned. I'm looking for reynolds stresses and scalar fluxes?

FMDenaro May 25, 2012 11:45

scalar varable are generally located at pressure nodes, Reynolds stresses require velocity components that are staggered each others...

challenger149 May 25, 2012 12:04

Quote:

Originally Posted by FMDenaro (Post 363137)
scalar varable are generally located at pressure nodes, Reynolds stresses require velocity components that are staggered each others...

so can we say that the position of uu and ww is in pressure nodes and uw's is in velocity nodes? (in 2DV)

FMDenaro May 25, 2012 12:28

Quote:

Originally Posted by challenger149 (Post 363139)
so can we say that the position of uu and ww is in pressure nodes and uw's is in velocity nodes? (in 2DV)

homogeneous correlations uu and ww are each one in the same staggered position of the respective velocity componente, without interpolation, while u and w are in different positions and you must interpolate to compute uw. However, if you want all the Reynolds tensor computed in the pressure location you must interpolate all components...


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