Observation of bed formation; visualisation of flow with contrast medium Features - flow in an inclinable flume with and without bed-load transport - subcritical and supercritical flow - siltation and scour formation at a bridge pier or a sluice gate Learning objectives/experiments - bed-load transport in open channels -- subcritical and supercritical flow -- formation of ripples, dunes and antidunes - how flow velocity affects bed-load transport - fluvial obstacle mark (siltation/scour formation) -- bridge pier -- sluice gate - visualisation of the flow - open-channel flow without sediment transport -- subcritical and supercritical flow -- control structure: sluice gate -- discharge measurement on the sharp-crested weir Specification [1] investigation of open-channel flow with and without bed-load transport [2] experimental flume, consisting of experimental section, inlet element, water outlet and closed water circuit [3] smoothly adjustable inclination of the experimental section [4] side walls of the experimental section are made of tempered glass for excellent observation of the experiments [5] all surfaces in contact with water are made of corrosion-resistant materials [6] flow-optimized inlet element for low-turbulence entry to the experimental section [7] closed water circuit with water tank with sediment trap for coarse sand, pump and manual flow rate adjustment [8] sluice gate and bridge pier for experiments with and without sediment transport [9] visualisation of the flow using a contrast medium [10] discharge measurement via measuring weir in the water drain [11] level gauge for measuring the discharge depth Technical data Experimental section - length: 1600mm - flow cross-section WxH: 86x300mm - inclination adjustment: -1...+3% Tank: 280L Pump - power consumption: 1,02kW - max. flow rate: 22,5m3/h - max. head: 13,7m Sediment trap filter element - aperture size: 0,3mm (49mesh) 230V, 50Hz, 1 phase 230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase UL/CSA optional LxWxH: 3450x650x1200mm Weight: approx. 215kg
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