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I Help needed in understanding a fluid mechanics concept

  1. Jan 1, 2017 #1

    Please see attached word document;when a valve is closed, the pressure rises at the valve. The ΔP mentioned in this document is the change in pressure with respect to the reservoir pressure.

    I need to know why ΔH = H -Hf ; I've tried to show this but simply cannot. Does anyone have any idea here?

    Attached Files:

  2. jcsd
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