Flows through the following flumes may be measured using the universal head
vs. flow characterization, P-40=4.
Cuthroat Flume
•
similar to Parshall flume except that
the floor is flat bottomed and throat
has no virtual length.
•
refer to manufacturer’s
specifications for flow equation and
point of head measurement.
Dual range (nested) Parshall Flume
•
two flumes, a larger on top of the smaller, in order to
handle a larger range of flows
SINGLE EXPONENTIAL , P-40 = 1(cont’d)
FLUMES (cont’d)
plan
plan
front
Trapezoidal Flume
•
similar to Parshall flume except that
floor is flat bottomed and walls are
sloped outward
isometric
PL-399 6 – 38
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