The channel sides are transparent in order that bed profile changes can be readily observed, and a section of one side is provided with graphical grid markings to permit quantitative assessments to be made of bedform dynamics. The unit consists of an inclinable channel mounted on a base plate, together with a discharge tank and recirculating pump. To commence a demonstration, sand is placed evenly along the channel bed, between the inlet tank and the overfill discharge weir. The channel slope is adjusted by means of a fine screw jack to which is attached an accurate slope indicator. Water is circulated around the system at one of the three selectable flow rates.
Experimental Capability:
Mechanics of sediment transport
Depositionary features and facies
Fixed, smooth bed flow
Flow over a fixed, gravel bed
Flow over a mobile sand-bed
Bed form hysteresis
Computational work
Local scour
Flow structures
