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-   -   how does Fluent calculate the pressure and viscous force vector? (http://www.cfd-online.com/Forums/fluent/73979-how-does-fluent-calculate-pressure-viscous-force-vector.html)

Ralf Schmidt March 21, 2010 16:25

how does Fluent calculate the pressure and viscous force vector?
 
Hi!

can someone explain me, how does Fluent calculate the pressure and viscous force vector?

In the handbook in section "29.3.1 Computing Forces, Moments, and the Center of Pressure" it is only described, that the total force component is computed using the pressure and viscous force vector.

But, hoe are they calculated?? I didn't found anything about that in the manual...

Thank you!
Ralf

P.S.: I found following: "net pressure force vector, acting on a wall zone, is computed as the vector sum of the individual force vectors for each cell face"

But.. how to calculate the individual force vectors??

Pasha_l May 17, 2010 16:29

Hallo, haben Sie was weiter entdeckt zur Berechnung der viskosen Kräften?

Ralf Schmidt May 17, 2010 16:49

not so far ... i am looking now in a totally other direction...


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