Naslov
Hydraulic design of the settling basin for irrigation system

Autori
Kovač, Ante ; Gilja, Gordon ; Fliszar, Robert

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
17th International Symposium on Water Management and Hydraulic Engineering / Szydłowski, Michał - Gdanjsk : Faculty of Civil and Environmental Engineering at the Gdańsk University of Technology (Gdańsk Tech), 2022, 22-22

Skup
17th International Conference on Water Management and Hydraulic Engineering (WMHE 2022)

Mjesto i datum
Sopot, Poljska, 14.09.2022. - 18.09.2022

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
settling basin ; irrigation system ; CFD

Sažetak
Siltation is one of the most common problems in irrigation systems, where sediment particles can cause clogging and reduce irrigation efficiency, thus reducing system’s operational efficiency. Settling basins are integral part of the traditional irrigation pumping systems that abstract high volumes of water from the watercourses with high suspended sediment concentration. In order to fully exploit their main advantages, versatility and low maintenance requirements, they need to be efficiently designed to reduce their footprint and overall cost, at the same time retaining hydraulic efficiency for sediment removal. The objective of this study was to investigate the influence of the basin layout on the siltation rate for fine sand particles. A CFD model was applied to simulate the flow pattern in the settling basin subject to water withdrawal by pumping station. A total of six selected settling type basins were selected for simulating of short-term continuous flow through the basin for two flow boundary conditions, replicating operational prototype conditions. Evaluation of the hydraulic efficiency through identification of the intensive sedimentation areas was done using settling velocity approach and particle trajectories within the settling basin characteristic for each basin layout. Calculated spatial sediment concentration and deposition rate are further used to investigate the siltation volume and distribution pattern within the siltation basin, optimizing the basin section width. Result show that deposition generally exhibits decreasing pattern from the forebay to the pump intake. For further optimization, settling volume can be used to control system operation without adjusting the settling basin layout.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo, Interdisciplinarne tehničke znanosti

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