Page 78 - ebook fluid mechanics_finalize

FLUID MECHANICS

1 W
2
Kinetic energy = v
2 g

v 2
Kinetic energy per unit weight =
2 g

v 2
The kinetic energy per unit weight is also measured as a length and referred to
2 g

as the velocity head.

The total energy of the liquid is the sum of these three forms of energy

Total head = potential head + pressure head + velocity head

p v 2
Total energy per unit weight = z + +
 2 g

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