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The product Zy in a Trapezoidal channel is 2 and the side slope is1/2. Calculate the wetted perimeter of the channel section if the wetted is 32m^2.

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in Fluid Mechanics by (118k points)
The product Zy in a Trapezoidal channel is 2 and the side slope is1/2. Calculate the wetted perimeter of the channel section if the wetted is 32m^2.

(a) 13.94m

(b) 14.94m

(c) 15.94m

(d) 16.94m

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This interesting question is from Geometrical Properties of Trapezoidal Section topic in portion Flow in Open Channels of Fluid Mechanics

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Best answer
The correct answer is (b) 14.94m

Best explanation: Zy=2;y=4m

A = (B+Zy)y;B=6m

Wetted Perimeter = B+2y√(1+Z^2)

P = 14.94m.

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