Improving the Pressurized Flushing Efficiency in Reservoirs: an Experimental Study

Mohamad Reza Madadi (), Majid Rahimpour () and Kourosh Qaderi ()
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Mohamad Reza Madadi: Shahid Bahonar University of Kerman
Majid Rahimpour: Shahid Bahonar University of Kerman
Kourosh Qaderi: Shahid Bahonar University of Kerman

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2017, vol. 31, issue 14, No 16, 4633-4647

Abstract: Abstract Sediment flushing in many reservoirs of the world is accomplished with low efficiency. In this study, a new configuration was proposed for reservoir bottom outlet to increase the pressurized flushing efficiency. In the new configuration, a projecting semi-circular structure was connected to the upstream edge of bottom outlet. It was observed that by employing the projecting bottom outlet, the sediment removal efficiency increased significantly compared to the flushing via typical bottom outlet. In the case of new-configuration bottom outlet with L sc /D outlet = 5.26 and D sc /D outlet = 1.32, the dimensionless length, width and depth of flushing cone increased 280%, 45% and 14%, respectively, compared to the reference test. The proposed structure can ensure the sustainable use of reservoirs.

Keywords: Reservoir desilting; Flushing efficiency; Bottom outlet; Semi-circular structure (search for similar items in EconPapers)
Date: 2017
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DOI: 10.1007/s11269-017-1770-y

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