Professional paper

https://doi.org/10.14256/JCE.1499.2015

Physical model study for evaluation of jet impact on sediment flushing

Ahmad Abdipour
Hassan Ahmadi
Seyed Abbas Hoseyni

Abstract

Pressure flushing is one of the methods that are used for removing sediments from reservoirs. In this research, submerged jets were used in front of the dam. A physical model was developed to study the influence of jet characteristics (nozzle diameter, jet velocity, and jet discharge) and reservoir output parameters (bottom outlet level and discharge) on the sediment release. The efficiency of the jets was established by comparing the sediment scour obtained under different conditions: once with jets and once without jets. The sediment scouring efficiency ranged between 0.9 and 3.1 for jet experiments, and between 0.1 and 0.3 for reference tests (without jets).

Keywords

pressure flushing; physical model; sediment scouring; jet velocity; nozzle diameter

Hrčak ID:

207202

URI

https://hrcak.srce.hr/207202

Publication date:

23.10.2018.

Article data in other languages: croatian

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