Influence of diversion angle on water and sediment flow into diversion channel

Accumulation of the sediment in the stream of the diversion channels adversely affects its operational systems. Diversion channels are often constructed perpendicular to the main river. In this study, the water flow and sediment transport in the diversion channel with different angles were investiga...

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Main Authors: Alomari, Nashwan K., Yusuf, Badronnisa, Mohammad Ali, Thamer Ahmad, Ghazali, Abdul Halim
Format: Article
Language:English
Published: Elsevier 2020
Online Access:http://psasir.upm.edu.my/id/eprint/89362/
http://psasir.upm.edu.my/id/eprint/89362/1/WATER.pdf
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author Alomari, Nashwan K.
Yusuf, Badronnisa
Mohammad Ali, Thamer Ahmad
Ghazali, Abdul Halim
author_facet Alomari, Nashwan K.
Yusuf, Badronnisa
Mohammad Ali, Thamer Ahmad
Ghazali, Abdul Halim
author_sort Alomari, Nashwan K.
building UPM Institutional Repository
collection Online Access
description Accumulation of the sediment in the stream of the diversion channels adversely affects its operational systems. Diversion channels are often constructed perpendicular to the main river. In this study, the water flow and sediment transport in the diversion channel with different angles were investigated in an attempt to maximize water discharge and minimize sediment discharge. A physical model with movable bed was used to simulate water and sediment flow with five diversion angles (θ) between (30°–90°). Moreover, three bed width ratios (Br) (the relation between diversion to main channel bed width) between 30% and 50% and five total discharges between (7.25 L/s to 12.25 L/s) were considered for each case of (θ). The results showed, up to 10%, increasing in proportion discharge ratios for 30 and 45 diversion angles compared with 90° diversion angle. The results also showed that the lowest diversion sediment concentration was provided by the (θ) of 30°. Across all scenarios, the average proportion concentration reduction was 64%, compared with 90° diversion angle. Closer observation of the diversion system mechanism confirmed that decreased (θ) result in decreased sediment concentrations in the diversion channels. In conclusion, the diversion channel water and sediment discharge could be effectively managed by changing the (θ) to 30° or 45° instead of 90°.
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spelling upm-893622021-08-19T00:54:59Z http://psasir.upm.edu.my/id/eprint/89362/ Influence of diversion angle on water and sediment flow into diversion channel Alomari, Nashwan K. Yusuf, Badronnisa Mohammad Ali, Thamer Ahmad Ghazali, Abdul Halim Accumulation of the sediment in the stream of the diversion channels adversely affects its operational systems. Diversion channels are often constructed perpendicular to the main river. In this study, the water flow and sediment transport in the diversion channel with different angles were investigated in an attempt to maximize water discharge and minimize sediment discharge. A physical model with movable bed was used to simulate water and sediment flow with five diversion angles (θ) between (30°–90°). Moreover, three bed width ratios (Br) (the relation between diversion to main channel bed width) between 30% and 50% and five total discharges between (7.25 L/s to 12.25 L/s) were considered for each case of (θ). The results showed, up to 10%, increasing in proportion discharge ratios for 30 and 45 diversion angles compared with 90° diversion angle. The results also showed that the lowest diversion sediment concentration was provided by the (θ) of 30°. Across all scenarios, the average proportion concentration reduction was 64%, compared with 90° diversion angle. Closer observation of the diversion system mechanism confirmed that decreased (θ) result in decreased sediment concentrations in the diversion channels. In conclusion, the diversion channel water and sediment discharge could be effectively managed by changing the (θ) to 30° or 45° instead of 90°. Elsevier 2020 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/89362/1/WATER.pdf Alomari, Nashwan K. and Yusuf, Badronnisa and Mohammad Ali, Thamer Ahmad and Ghazali, Abdul Halim (2020) Influence of diversion angle on water and sediment flow into diversion channel. International Journal of Sediment Research, 35 (6). 600 - 608. ISSN 1001-6279 https://www.sciencedirect.com/science/article/pii/S1001627920300706 10.1016/j.ijsrc.2020.06.006
spellingShingle Alomari, Nashwan K.
Yusuf, Badronnisa
Mohammad Ali, Thamer Ahmad
Ghazali, Abdul Halim
Influence of diversion angle on water and sediment flow into diversion channel
title Influence of diversion angle on water and sediment flow into diversion channel
title_full Influence of diversion angle on water and sediment flow into diversion channel
title_fullStr Influence of diversion angle on water and sediment flow into diversion channel
title_full_unstemmed Influence of diversion angle on water and sediment flow into diversion channel
title_short Influence of diversion angle on water and sediment flow into diversion channel
title_sort influence of diversion angle on water and sediment flow into diversion channel
url http://psasir.upm.edu.my/id/eprint/89362/
http://psasir.upm.edu.my/id/eprint/89362/
http://psasir.upm.edu.my/id/eprint/89362/
http://psasir.upm.edu.my/id/eprint/89362/1/WATER.pdf