CIV E 530 - OPEN-CHANNEL HYDRAULICS SPRING 2007 - MIDTERM 2 - SOLUTION

PROBLEM 1

b = 5 m

S_o = 0.0025

n = 0.015

y = 0.8 m

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Flow area A = b × y = 5 × 0.8 = 4.0 m²

Hydraulic radius: R = A/P = 4.0 /(5 + 0.8 + 0.8) = 0.606 m

Flow velocity v = (1/n) R^2/3S^1/2 = (1/0.015) (0.606)^2/3(0.0025)^1/2 = 2.387 m/s

Discharge Q = v A = 2.387 × 4.0 = 9.548 m³/s

Problem 2

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