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velocity head

noun
1.
the velocity of a fluid expressed in terms of the head or static pressure required to produce that velocity. It equals ρν/2 where ρ is the density of the fluid and ν is the velocity. In hydrology the density of water can be written 1/G where G is the gravitational constant
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Value for velocity

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