Influence of geometry shape factor on trapping and flushing efficiencies

The trap efficiency of a shallow reservoir depends on the characteristics of the inflowing sediments and the retention time of the water in the reservoir, which in turn are controlled by the reservoir geometry. With the purpose of controlling the trapped and flushed sediments in shallow reservoirs, the effects of the geometry on sediment deposition and removal were investigated with systematic physical experiments. The geometry shape factor is an important factor to predict the flow and sediment deposition in the reservoir. The evolution of trap efficiency has an increasing or decreasing effect according to the geometry shape factor and flow patterns. The channel formed during flushing attracts the jet and stabilizes the flow structures over the entire reservoir. Empirical formulas to describe the relationship between the geometry shape factor and sediment trap efficiency as well as flushing efficiency were developed.


Editor(s):
Schleiss, Anton
De Cesare, Giovanni
Franca, Mário J.
Pfister, Michael
Published in:
Proceedings of River Flow 2014, Special Session on Reservoir Sedimentation, 129-137
Presented at:
River Flow 2014, Lausanne, Switzerland, September, 3-5, 2014
Year:
2014
Publisher:
Leiden, CRC Press/Balkema
ISBN:
978-1-138-02675-9
Keywords:
Note:
[993]
Laboratories:




 Record created 2014-10-08, last modified 2018-09-13

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