Water flows from a large tank through an orifice and discharges to the atmosphere, as shown. The coefficients of velocity and contraction are 0.95 and 0.63, respectively. Find the diameter and actual velocity of the jet and the discharge from the orifice. 10 ft Water 2-in-diameter, sharp-edged orifice |

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An orifice meter with a 5 cm diameter is used to measure the flow rate of liquid. Under a head of 4 m, the velocity of the liquid at vena contracta is 7.5 m/s. If the actual discharge through the pipe is 8 l/s, calculate the coefficients of velocity, discharge, and contraction.  Answers should be : Cv= 0.85 Cd= 0.46 Cc= 0.54