CIV E 530 - OPEN-CHANNEL HYDRAULICS FALL 2005 - MIDTERM 2 - SOLUTION

PROBLEM 1

y_c = (q²/g)^1/3

q_max = 50 m³/s/m

y_c = (q²/g)^1/3 = (50²/9.81)^1/3

y_c = 6.34 m.

PROBLEM 2

Q = C L H^3/2 = 3.09 L H^3/2

Q = 3.09 × 20 × (0.8)^3/2

y_c = 44.22 cfs.

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C = 2/3 [(2/3)g]^1/2

C = 2/3 [(2/3) × 32.17 ]^1/2 = 3.087

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