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-   -   (u' v' w') write velocity fluctuations in LES? (http://www.cfd-online.com/Forums/openfoam-solving/108350-u-v-w-write-velocity-fluctuations-les.html)

owayz October 20, 2012 21:32

(u' v' w') write velocity fluctuations in LES?
 
Hallo All,
I am doing an LES simulation and I want to write the velocity fluctuations as probe data over time.
I would really appreciate if someone could help.

regards,
Awais

nabeelalzurfi December 17, 2012 13:58

Hi
1- Calculate the averaged velocity by summing the instantaneous velocities of each time steps divided by the number of time steps.
2- the fluctuated velocity = averaged velocity - instantaneous velocity (for each time steps)


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