The
specific energy
of flow in a channel section is defined as the energy per pound of water measured
with respect to the channel bottom. Specific energy,
E
(expressed as head in feet), is given by the following:
(Equation 9.2.2.a)
y
= depth (ft)
V
= mean velocity (ft/sec)
g
= acceleration of gravity = 32.2 ft/sec2
Q
= discharge (cfs)
A
= area of channel cross section (ft
)
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