CFD Online Discussion Forums

CFD Online Discussion Forums (https://www.cfd-online.com/Forums/)
-   OpenFOAM (https://www.cfd-online.com/Forums/openfoam/)
-   -   stressComponents utility in LES calculations (https://www.cfd-online.com/Forums/openfoam/73063-stresscomponents-utility-les-calculations.html)

vkrastev February 25, 2010 13:25

stressComponents utility in LES calculations
 
Hi everybody,
I'm working on a 2d LES simulation on a channel flow. The model I use is the oneEqEddy, with the same settings of the pitzDaily LES pisoFoam tutorial. So, the matter I wish to investigate is about the meaning of the stressComponents utility output in a case such this: are these components referred to the Smagorinski stress tensor (TAUsgs)? If they not, what actually do they represent in a LES simulation?

Thank you in advance

vkrastev February 25, 2010 13:44

Any replies?

vkrastev February 26, 2010 05:19

??????????

longamon April 12, 2011 12:57

In its source code, stressComponents is defined as:

laminarTransport.nu()*2*dev(symm(fvc::grad(U)))

I think it's not related to sgs stresses, its the deviatoric stress components.
(1 year late :^P)


All times are GMT -4. The time now is 06:34.