| The
30.0-m long, 0.91-m wide and 0.45-m deep sediment-recirculating flume is
the largest IIHR sediment facility. The flume has glass-sided walls to
facilitate viewing and use of laser-based techniques. Water and sediment
are recirculated by two 7.5-horsepower, variable speed, motor-pump units
located beneath the tailbox of the flume. The flow is returned to the
headbox of the flume via two 0.25-meter-diameter pipes, each having a
side-contracted orifice for discharge measurement. Four synchronized
screw-driven jacks located at the ends and quarter points of the flume
allow the flume to tilt about its midsection without interrupting the
flow. Precisely leveled steel rails for the instrument carriage, mounted
the flume walls provide the reference frame for the elevation relative
to a plane tilted at the flume slope. The slope of the bed can be
measured by means of a dial gauge and a point gauge at the downstream
end of the flume. Water-surface elevations are measured using eight
piezometers spaced 3.048-m intervals along the flume and 0.065 m above
the flume base and connected to a bank of glass manometer tubes.
The flume is equipped
with conventional instrumentation for velocity and sediment
measurements.
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| IIHR's
sediment-recirculating flume |
More Information
For more information
about the IIHR sediment-recirculating flume, please contact Dr.
Marian Muste or Dr. Fred Stern. |
