Control of Sediment Inflow into a Trapezoidal Intake Canal Using Submerged Vanes
| Autor: | Ananth Wuppukondur, Venu Chandra, Ranjith Kannankattil Balakrishnan, Sruthi Thazhathe Kalathil |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
geography
geography.geographical_feature_category 0208 environmental biotechnology Secondary circulation 0211 other engineering and technologies Sediment Ocean Engineering 02 engineering and technology Inflow Sedimentation 020801 environmental engineering Hydraulic structure 021105 building & construction Mean flow Geotechnical engineering Main channel Channel (geography) Geology Water Science and Technology Civil and Structural Engineering |
| Zdroj: | Journal of Waterway, Port, Coastal, and Ocean Engineering. 144 |
| ISSN: | 1943-5460 0733-950X |
| Popis: | Intake canals are used to withdraw water from rivers for various purposes. Sedimentation in the intake canal reduces the quality and quantity of water being delivered. In this study, experiments were conducted to control sediment entry into an intake channel using submerged vanes in a physical model with a rectangular mobile-bed main channel and a trapezoidal rigid-bed intake channel diverting at an angle of 45°. The variables in the study included vane angle, number of vane rows, and vane spacing in terms of mean flow depth in the main channel. In addition to the commonly used vane array with uniform vane heights, three other vane-height configurations were also tested. The least local scour around vanes and highest sediment reduction (~70%) were observed for vanes oriented at a 15° vane angle with an increasing vane-height configuration placed in two rows. It was also observed that control of sediment entry into the intake canal increased with an increase of both vane spacing and number of vane rows. |
| Databáze: | OpenAIRE |
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