+1 vote
in Fluid Mechanics by (118k points)
Find the discharge over a cipolletti weir of length 1.3 m when the head over the weir is 0.65 m. Take Cd = 0.60.

(a) 2.12 m^3/s

(b) 1.21 m^3/s

(c) 2.5 m^3/s

(d) 1.5 m^3/s

The question was posed to me by my college professor while I was bunking the class.

This interesting question is from Time Required to Empty a Reservoir with  Weirs or Notches in section Orifices, Mouthpieces, Notches and Weirs of Fluid Mechanics

1 Answer

+2 votes
by (362k points)
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Best answer
Correct answer is (b) 1.21 m^3/s

Explanation: Q = ⅔ * Cd * L * (2g)^0.5 * H^1.5

                        = 1.21 m^3/s.

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