Thursday 27 January 2011

Momentum equation, Force by flow

F = r·Q·(V2-V1)  [N]
r        = Density of liquid         [kg/m3]
fresh water = 1000             [kg/m3]
saltwater   = 1025             [kg/m3]
Q   = Discharge/ flow rate      [m3/s]
V1  = Mean velocity before      [m/s]
V2  = Mean velocity after       [m/s]

Force is negative, because it is a reaction force


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