Sediment Transport Demonstration Channel
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The equipment is self-contained and may be bench-mounted in either the classroom or laboratory by virtue of its portability.
A model undershot weir and bridge pier are included for local erosion demonstrations.
A transparent, inclinable flow channel through which water can be re-circulated by a pump over a mobile bed to demonstrate the whole range of bedforms from incipient particle movement to bed wash-out.
The working section of the channel is 1.55m long, 78mm wide and 110mm deep.
A water level gauge is supplied to calibrate the overshot weir.
Three different discharge rates can be selected (and measured) within the range 0.2 to 0.6 litres/sec.
The channel slope can be adjusted within the range 0-10%.
Description:
The unit consists of an inclinable channel mounted on a frame, together with a discharge tank and recirculating pump. The channel slope is adjusted by means of a fine screw jack to which an accurate slope indicator is attached. To commence a demonstration, sand is placed evenly along the channel bed, between the inlet tank and the overfall discharge weir. The channel sides are transparent in order that bed profile changes can be observed, and a section of one side is provided with graphical grid markings to permit quantitative assessments to be made of bedform dynamics. Water is circulated around the system at one of the three selectable flow rates.
Technical Specifications:
Channel working section:
Length: 1.55m
Depth: 0.11m
Width: 0.78m
Discharge rate:
Three fixed flow rates between 0.2 and 0.6 litres /sec, selected by switch on pump
Sediment diameter: 0.1 to 0.3mm
Slope: 0 to 10%.
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