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Video

How to Collapse a Pipe by Closing a Valve

Water hammer can work in both directions, and I only discussed one of those in the previous video (https://youtu.be/xoLmVFAFjn4). This episode revisits that demonstration to show how water hammer can form a vacuum pressure in a pipe. Momentum carrying fluid away from a valve wants to keep going even after the valve is closed. This generates a negative pressure than can cause major damage!

Subjects:

Building Services Engineering

Keywords:

Valves Water hammer Hydraulic control Hydraulic transients Relief valves Fluid mechanics

Resource Type:

Video
Video

What is Water Hammer?

Hydraulic transients (also known as water hammer) can seem innocuous in a residential setting, but these spikes in pressure can cause major damage to large pipelines and industrial pipe networks. In this video, we briefly discuss how water hammer occurs and how engineers mitigate the effect.

Subjects:

Building Services Engineering

Keywords:

Water hammer Hydraulic transients Fluid mechanics

Resource Type:

Video

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