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  • Video 
    How to Collapse a Pipe by Closing a Valve

    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?

    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
     
  • Video 
    What is Cavitation?

    What is Cavitation?

    This video shows the basics of fluid cavitation, including demonstration from AvE. If you subject a fluid to a sudden change in pressure, some interesting things can happen. You can cause tremendous damage to moving parts, or you can harness this destructive power in many beneficial ways.

    Keywords:
    Hydrodynamics Cavitation Fluid mechanics
    Resource Type:
    Video
     
  • Video 
    How Quicksand Causes Dam Failures

    How Quicksand Causes Dam Failures

    In civil engineering, quicksand is more than just a puddle of mud! The "quick condition" occurs when seepage reduces the effective stress of a soil. This can lead to some dangerous conditions, especially if the seepage causes piping erosion to occur at a dam.

    Subjects:
    Hydraulic Engineering
    Keywords:
    Seepage Dam failures Quicks Fluid mechanics
    Resource Type:
    Video
     
  • Video 
    Boil Water at Room Temperature! - Hydrostatics

    Boil Water at Room Temperature! - Hydrostatics

    Engineers that work with fluids need a solid understanding of how they behave, and there’s one branch of fluid mechanics that plays a role in areas all across our lives. Whether you’re designing a water tower for a city or you just want to understand how those upside-down pet bowls work, you’ve got to know how to relate the depth and pressure of a fluid: hydrostatics.

    Keywords:
    Hydrostatics Fluid mechanics
    Resource Type:
    Video