In: Civil Engineering
(b) Answer the following in relation to flow through orifices.
(i) Explain why the coefficient of contraction is included in the discharge equation for flow through a small orifice. [3 marks]
(ii) If a small orifice meter with a diameter of 0.016 m discharges flow at a rate of 6 x 10-4 m3 /s under a head of 1.6 m, what is the value of the discharge coefficient? [2 marks]
(iii) Explain the hydraulic difference between a small orifice and a large orifice.
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