An unfinished concrete duct, of diameter 1.5 m, is flowinghalf-full at 8.0 m3/s. (a) Is this a critical flow? If not, whatis (b) the critical flow rate, (c) the critical slope, and (d ) theFroude number? (e) If the flow is uniform, what is the slopeof the duct?
An unfinished concrete duct, of diameter 1.5 m, is flowing
half-full at 8.0 m3/s. (a) Is this a critical flow? If not, what
is (b) the critical flow rate, (c) the critical slope, and (d ) the
Froude number? (e) If the flow is uniform, what is the slope
of the duct?
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(a)
The cross-section area of the wetted duct is written as,
The velocity of the flow in the duct is written as,
The Froud number is written as,
Therefore, the flow is not critical. It will be a supercritical flow.
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