Question

Derive an expression of discharge through an orifice plate

Answer 1

The expression of discharge is v2 =  √ 2 gh + v1^2

Explanation:

Orifice meter is a device used for measuring the rate of flow of a fluid flowing through a pipe.

• Bernoulli equation used on discharge through an orifice plate.
• P1 /ρg + v1^2 / 2 g + z1  = P2 / ρg + v2^2 / 2 g + z2
• => ( P1 / ρg + z1) - ( P2 / ρg + z2) = v2^2 - v1^2 / 2 g
• h = v2^2 - v1^2 / 2 g
• v2 =  √ 2 gh + v1^2

Here h is the differential head.

Answer 2

Answer:

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