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Unformatted text preview: is the shear stress in lb/ft 2 exerted on the channel bed by this flow? Problem 4 A rectangular concrete channel is 3 m wide and 2 m high. The water (at 20 °C) in the main channel is 1.5 m deep and is flowing at a rate of 30 m 3 /s. Determine the flow area, wetted perimeter, and hydraulic radius. Is the flow laminar or turbulent? Problem 5 The total head loss is the sum of frictional losses and local losses, thus: l f H H H ∆ + ∆ = ∆ Assuming that flow is smooth turbulent and the HazenWilliams power formula applies, develop the equations for ∆ H f and H l assuming you know the flow Q, the cross sectional area A of the circular pipe, and the length of the pipe, L. Write your answer in terms of Q, A, and L. Assuming H is known derive, an iterative equation for diameter d where we expect frictional losses to dominate....
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This note was uploaded on 02/15/2012 for the course CWR 4202 taught by Professor Newman during the Fall '08 term at University of Florida.
 Fall '08
 Newman

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