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Fluid Mechanics

Pitot Tube

A pitot-stati...

Question

A pitot-static tube, with a coefficient of 0.98 is used to measure the velocity of water in a pipe. The stagnation pressure recorded is 3m and the static pressure is 0.5 m. What is the velocity of flow?

A

7.2 m/s

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B

6.8 m/s

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C

5.9 m/s

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D

5.2 m/s

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Solution

The correct option is B 6.8 m/s
$V = C_{V} \sqrt{2 g (ρ_{s t a g} - ρ_{s t a t i c})}$

$= 0.98 \times \sqrt{2 \times 9.81 \times (3 - 0.5)}$

= 6.86 m/s

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