Chapter 7 FLOW THROUGH PIPES
FR = Factor x Wetted Area x Velocity 2 FR = ( f / 2g) x ( d L) x v 2 Where, f = Friction coefficient. d = Diameter of pipe. L = Length of pipe. hf = ( f / 2g) x ( d L) x v2 = 4 f * L * v2 ( d2 /4) d * 2 g hf = 4 f L v 2 2 g d It may be substituted for [v = Q / ( d2 /4)] in the last equation to get the head loss for a known discharge. Thus, hf = 32 f L Q 2 2 g d 5 Note: In American practice and ...