ERDC/CHL CHETN-IV-32
June 2001
Cross-barrier flow through the pipe is from the front face to the back face. Flow can be
computed by applying the Bernoulli equation to the pipe section crossing the internal barrier.
This calculation results in a submerged discharging flow through the pipe from front to back
computed as:
2 g (ζ L - ζ R )
πD 2
Qn =
(10)
fL
4
D
Configuration 5: Water Elevation on the Back Side of the Internal Barrier Greater
than Water Elevation on the Front Side; Water Elevation on the Back Side Greater
than the Crown Height of the Cross-Barrier Pipe; and Water Elevation on the
Front Side Below the Crown Height of the Pipe
Water elevation on the back side of the internal barrier is greater than water elevation on the
front side; water elevation on the back side is greater than the crown height of the cross-barrier
pipe; and water elevation on the front side is below the crown height of the pipe (Figure 5). Thus
ζR >ζL
(11)
ζ R ≥ hp and ζ L < h p
(12)
Cross-barrier flow through the pipe is from the back face to the front face. Flow can be
computed by applying the Bernoulli equation to the pipe section crossing the internal barrier.
Figure 5. Water elevation on the back side of the internal barrier greater than water elevation
on the front side; water elevation on the back side greater than the crown height of the
cross-barrier pipe; and water elevation on the front side below crown height of the pipe
6
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