# how does Fluent calculate the pressure and viscous force vector?

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 March 21, 2010, 15:25 how does Fluent calculate the pressure and viscous force vector? #1 Member   Ralf Schmidt Join Date: Mar 2009 Location: Austria Posts: 67 Rep Power: 10 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?? __________________ CFD - nothing but Colourful Fluid Dynamics

 May 17, 2010, 15:29 #2 New Member   Join Date: Mar 2010 Location: Germany Posts: 2 Rep Power: 0 Hallo, haben Sie was weiter entdeckt zur Berechnung der viskosen Kräften?

 May 17, 2010, 15:49 #3 Member   Ralf Schmidt Join Date: Mar 2009 Location: Austria Posts: 67 Rep Power: 10 not so far ... i am looking now in a totally other direction... __________________ CFD - nothing but Colourful Fluid Dynamics

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