Water Hammer - What is Water Hammer? (1/8)

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What is Water Hammer?
Today, we will be discussing the Pressure Dynamics of Water Hammer in Piping. We will tackle concepts, such as Pressure Dynamics, Valve Closure, Steady State Operation. We will learn what factors draw in from a Constant Pressure System.
Video 1/8 of our online course "Water hammer phenomena in Industrial Piping Systems": www.engineerin...
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[@cyrusadams6629]

This is an excellent explanation, thank you.

[@EngineeringTrainer]

Glad it was helpful! Make sure to check out the full free module on EngineeringTrainer.com.

[@iashish9174]

when the pressure in pipe is greater than that of the static head from reservoir, the water flows out of the pipe, which is indicated by the -ve velocity; does that means there is a flow separation/creation of vacuum takes place at the location of valve? kindly explain.

[@miguel5angles]

Thank you. Excellente!

[@AntonioGomez-gg7dd]

Amazing video

[@jacksonmasalu]

Nice topic

[@AP-po2zh]

What about the negative pressure wave. And how to calculate it's velocity?

[@EngineeringTrainer]

Hi there,
As long as cavitation doesn't occur as part of the negative pressure, the negative pressure wave (expansion wave) behaves similarly as positive pressure waves (compression waves). Except for the minus sign of course.

[@tonymunene1592]

What about pressure variation at the centre of the pipe

[@EngineeringTrainer]

Hi Tony, thanks for asking. This approach presented here considers the pipe as a 1-dimensional element and assumed the pressure is constant over the entire cross-sectional inner area of the pipe.

[@jacksonmasalu]

​@@EngineeringTrainerhello