Effects of sediment influx on sediment transport characteristics in a river channel

S. Rabab; M. Gormley; L. Beevers; A. Cuthbertson

doi:10.1201/b22619-38

Effects of sediment influx on sediment transport characteristics in a river channel

S. Rabab, M. Gormley, L. Beevers, A. Cuthbertson

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Flume experiments were conducted under unsteady hydrograph flows with sediment feed and no-sediment feed conditions specified at the upstream boundary. Bedload transport data were collected and analysed to investigate the effects of sediment supply on sediment transport characteristics in terms of bedload transport rates and hysteresis, as well as total bedload yields over the hydrograph duration. Higher sediment transport rates, and consequently 4-19% higher total bedload yields were found during no-sediment feed tests, as compared to equivalent sediment feed tests. Clockwise hysteresis was dominant during the no-sediment feed tests, while a frequent counter-clockwise hysteresis was observed during sediment supply tests. The results showed that hysteresis pattern had changed dramatically from counter-clockwise to clockwise during no sediment feed tests. These findings highlight the importance of sediment supply in laboratory investigations and differentiate the expected sediment transport characteristics in alluvial and supply-limited river channels.

Original language	English
Title of host publication	River Flow 2020
Subtitle of host publication	Proceedings of the 10th Conference on Fluvial Hydraulics
Editors	Wim Uijttewaal, Mario J. Franca, Daniel Valero, Victor Chavarrias, Claudia Ylla Arbos, Ralph Schielen, Ralph Schielen, Alessandra Crosato
Place of Publication	London
Publisher	CRC Press
Pages	259-266
Number of pages	8
ISBN (Electronic)	9780367627737, 9781003110958
DOIs	https://doi.org/10.1201/b22619-38
Publication status	Published - 27 Aug 2020
Event	10th Conference on Fluvial Hydraulics: River Flow 2020 - Virtual, Online, Netherlands Duration: 7 Jul 2020 → 10 Jul 2020

Conference

Conference	10th Conference on Fluvial Hydraulics
Abbreviated title	River Flow 2020
Country/Territory	Netherlands
City	Virtual, Online
Period	7/07/20 → 10/07/20

ASJC Scopus subject areas

Fluid Flow and Transfer Processes
Geotechnical Engineering and Engineering Geology

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10.1201/b22619-38

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Rabab, S., Gormley, M., Beevers, L., & Cuthbertson, A. (2020). Effects of sediment influx on sediment transport characteristics in a river channel. In W. Uijttewaal, M. J. Franca, D. Valero, V. Chavarrias, C. Y. Arbos, R. Schielen, R. Schielen, & A. Crosato (Eds.), River Flow 2020: Proceedings of the 10th Conference on Fluvial Hydraulics (pp. 259-266). CRC Press. https://doi.org/10.1201/b22619-38

Rabab, S. ; Gormley, M. ; Beevers, L. et al. / Effects of sediment influx on sediment transport characteristics in a river channel. River Flow 2020: Proceedings of the 10th Conference on Fluvial Hydraulics. editor / Wim Uijttewaal ; Mario J. Franca ; Daniel Valero ; Victor Chavarrias ; Claudia Ylla Arbos ; Ralph Schielen ; Ralph Schielen ; Alessandra Crosato. London : CRC Press, 2020. pp. 259-266

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title = "Effects of sediment influx on sediment transport characteristics in a river channel",

abstract = "Flume experiments were conducted under unsteady hydrograph flows with sediment feed and no-sediment feed conditions specified at the upstream boundary. Bedload transport data were collected and analysed to investigate the effects of sediment supply on sediment transport characteristics in terms of bedload transport rates and hysteresis, as well as total bedload yields over the hydrograph duration. Higher sediment transport rates, and consequently 4-19% higher total bedload yields were found during no-sediment feed tests, as compared to equivalent sediment feed tests. Clockwise hysteresis was dominant during the no-sediment feed tests, while a frequent counter-clockwise hysteresis was observed during sediment supply tests. The results showed that hysteresis pattern had changed dramatically from counter-clockwise to clockwise during no sediment feed tests. These findings highlight the importance of sediment supply in laboratory investigations and differentiate the expected sediment transport characteristics in alluvial and supply-limited river channels.",

author = "S. Rabab and M. Gormley and L. Beevers and A. Cuthbertson",

note = "Publisher Copyright: {\textcopyright} 2020 Taylor & Francis Group, London; 10th Conference on Fluvial Hydraulics : River Flow 2020, River Flow 2020 ; Conference date: 07-07-2020 Through 10-07-2020",

year = "2020",

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doi = "10.1201/b22619-38",

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Rabab, S, Gormley, M, Beevers, L & Cuthbertson, A 2020, Effects of sediment influx on sediment transport characteristics in a river channel. in W Uijttewaal, MJ Franca, D Valero, V Chavarrias, CY Arbos, R Schielen, R Schielen & A Crosato (eds), River Flow 2020: Proceedings of the 10th Conference on Fluvial Hydraulics. CRC Press, London, pp. 259-266, 10th Conference on Fluvial Hydraulics, Virtual, Online, Netherlands, 7/07/20. https://doi.org/10.1201/b22619-38

Effects of sediment influx on sediment transport characteristics in a river channel. / Rabab, S.; Gormley, M.; Beevers, L. et al.
River Flow 2020: Proceedings of the 10th Conference on Fluvial Hydraulics. ed. / Wim Uijttewaal; Mario J. Franca; Daniel Valero; Victor Chavarrias; Claudia Ylla Arbos; Ralph Schielen; Ralph Schielen; Alessandra Crosato. London: CRC Press, 2020. p. 259-266.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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T1 - Effects of sediment influx on sediment transport characteristics in a river channel

AU - Rabab, S.

AU - Gormley, M.

AU - Beevers, L.

AU - Cuthbertson, A.

PY - 2020/8/27

Y1 - 2020/8/27

N2 - Flume experiments were conducted under unsteady hydrograph flows with sediment feed and no-sediment feed conditions specified at the upstream boundary. Bedload transport data were collected and analysed to investigate the effects of sediment supply on sediment transport characteristics in terms of bedload transport rates and hysteresis, as well as total bedload yields over the hydrograph duration. Higher sediment transport rates, and consequently 4-19% higher total bedload yields were found during no-sediment feed tests, as compared to equivalent sediment feed tests. Clockwise hysteresis was dominant during the no-sediment feed tests, while a frequent counter-clockwise hysteresis was observed during sediment supply tests. The results showed that hysteresis pattern had changed dramatically from counter-clockwise to clockwise during no sediment feed tests. These findings highlight the importance of sediment supply in laboratory investigations and differentiate the expected sediment transport characteristics in alluvial and supply-limited river channels.

AB - Flume experiments were conducted under unsteady hydrograph flows with sediment feed and no-sediment feed conditions specified at the upstream boundary. Bedload transport data were collected and analysed to investigate the effects of sediment supply on sediment transport characteristics in terms of bedload transport rates and hysteresis, as well as total bedload yields over the hydrograph duration. Higher sediment transport rates, and consequently 4-19% higher total bedload yields were found during no-sediment feed tests, as compared to equivalent sediment feed tests. Clockwise hysteresis was dominant during the no-sediment feed tests, while a frequent counter-clockwise hysteresis was observed during sediment supply tests. The results showed that hysteresis pattern had changed dramatically from counter-clockwise to clockwise during no sediment feed tests. These findings highlight the importance of sediment supply in laboratory investigations and differentiate the expected sediment transport characteristics in alluvial and supply-limited river channels.

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Rabab S, Gormley M, Beevers L, Cuthbertson A. Effects of sediment influx on sediment transport characteristics in a river channel. In Uijttewaal W, Franca MJ, Valero D, Chavarrias V, Arbos CY, Schielen R, Schielen R, Crosato A, editors, River Flow 2020: Proceedings of the 10th Conference on Fluvial Hydraulics. London: CRC Press. 2020. p. 259-266 doi: 10.1201/b22619-38

Effects of sediment influx on sediment transport characteristics in a river channel

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ASJC Scopus subject areas

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