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Find the discharge of water flowing over a rectangular notch of 1.3 m length when the constant head over the notch is 255 mm. Take Cd = .62

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in Fluid Mechanics by (118k points)
Find the discharge of water flowing over a rectangular notch of 1.3 m length when the constant head over the notch is 255 mm. Take Cd = .62

(a) 400 lit/s

(b) 465 lit/s

(c) 385 lit/s

(d) 575 lit/s

The question was posed to me in homework.

This is a very interesting question from Discharge over a Rectangular, Triangular, Trapezoidal & Stepped Notch in division Orifices, Mouthpieces, Notches and Weirs of Fluid Mechanics

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Correct answer is (a) 400 lit/s

Explanation: Q = 2/3 * L * √2g * H^1.5

                       = .67 * 1.3 * √19.62 * .255^1.5

                       = .385 m^3/min.

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