Page 380 - Civil Engineering Formulas

HYDRAULICS AND WATERWORKS FORMULAS 309

1

h

C c

2
Y

X

FIGURE 12.8 Fluid jet takes a parabolic path.

V 2 2g h 1 h 2 V 1 2 h L (12.53)
B 2g
where h losses in head, ft (m), between 1 and 2.
L
By assuming V 0, setting h h h, and using a coefficient of dis-
1
1
2
charge C to account for losses, the following formula is obtained:
Q Ca 2g h (12.54)

1
Δh
h 1

h 2
2

FIGURE 12.9 Discharge through a submerged orifice.