Flood suspended sediment transport: Combined modelling from dilute to hyper-concentrated flow
Pu J.H. Wallwork J.T. Khan M.A. Pandey M. Pourshahbaz H. Satyanaga A. Hanmaiahgari P.R. Gough T.
1 February 2021MDPI AG
Water (Switzerland)
2021#13Issue 3
During flooding, the suspended sediment transport usually experiences a wide-range of dilute to hyper-concentrated suspended sediment transport depending on the local flow and ground conditions. This paper assesses the distribution of sediment for a variety of hyper-concentrated and dilute flows. Due to the differences between hyper-concentrated and dilute flows, a linear-power coupled model is proposed to integrate these considerations. A parameterised method combining the sediment size, Rouse number, mean concentration, and flow depth parameters has been used for modelling the sediment profile. The accuracy of the proposed model has been verified against the reported laboratory measurements and comparison with other published analytical methods. The proposed method has been shown to effectively compute the concentration profile for a wide range of suspended sediment conditions from hyper-concentrated to dilute flows. Detailed comparisons reveal that the proposed model calculates the dilute profile with good correspondence to the measured data and other modelling results from literature. For the hyper-concentrated profile, a clear division of lower (bed-load) to upper layer (suspended-load) transport can be observed in the measured data. Using the proposed model, the transitional point from this lower to upper layer transport can be calculated precisely.
Dilute concentration , Flood , Flow depth , Hyper concentration , Mean concentration , Parameterised power-linear model , Rouse number , Sediment size parameter , Suspended sediment transport
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Faculty of Engineering and Informatics, University of Bradford, Bradford, DB7 1DP, United Kingdom
Galgotias College of Engineering and Technology, Greater Noida, Uttar Pradesh, 201310, India
National Institute of Technology (NIT), Warangal, Telangana, 506004, India
Department of Civil Engineering, University of Zanjan, Zanjan, 45371-38791, Iran
Department of Civil and Environmental Engineering, Nazarbayev University, Nur-Sultan, 010000, Kazakhstan
Department of Civil Engineering, Indian Institute of Technology, Kharagpur, 721302, India
Faculty of Engineering and Informatics
Galgotias College of Engineering and Technology
National Institute of Technology (NIT)
Department of Civil Engineering
Department of Civil and Environmental Engineering
Department of Civil Engineering
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