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Fluid Mechanics

Water Hammer in Pipes

In a pipeline...

Question

In a pipeline 1920 m long, the velocity of propagation of pressure wave is 960 m/s. Rapid closure of a downstream valve will entail, when the maximum time for the closure is:

A

8 s

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B

6 s

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C

4 s

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D

2 s

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Solution

The correct option is C 4 s
$t = \frac{2 L}{C} = \frac{2 (1920)}{960} = 4 s e c$

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