where f is the friction
factor, L is the length of the pipe, D is the diameter of the pipe, V is the
velocity of water in the pipe, g is the acceleration due to gravity, Q is the
flow rate, and A is the cross-section area of the pipe.
|This is the Darcy-Weisbach Friction Loss
Energy losses for
flow through ducts and pipes consist of major losses and minor losses. Major
losses are due to friction between the moving fluid and the inside walls of the
duct. Major losses are computed using the Darcy-Weisbach friction loss equation
(which utilizes the Moody friction factor). Minor losses are due to fittings
such as valves and elbows. In this case we assumed minor losses to be 0.02-ft.
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