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    Flood Suspended Sediment Transport: Combined Modelling from Dilute to Hyper-concentrated Flow

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    Publication date
    2021-02-01
    Author
    Pu, Jaan H.
    Wallwork, Joseph T.
    Khan, M.A.
    Pandey, M.
    Pourshahbaz, H.
    Satyanaga, A.
    Hanmaiahgari, P.R.
    Gough, Timothy D.
    Keyword
    Parameterised power-linear model
    Hyper concentration
    Dilute concentration
    Suspended sediment transport
    Flood
    Sediment size parameter
    Rouse number
    Mean concentration
    Flow depth
    Rights
    (c) 2021 The Authors. This is an Open Access article distributed under the Creative Commons CC-BY license (https:// creativecommons.org/licenses/by/4.0/)
    Peer-Reviewed
    Yes
    Open Access status
    Gold
    
    Metadata
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    Abstract
    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 con-ditions. 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 com-parisons 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.
    URI
    http://hdl.handle.net/10454/18354
    Version
    Published version
    Citation
    Pu JH, Wallwork JT, Khan MA et al (2021) Flood Suspended Sediment Transport: Combined Modelling from Dilute to Hyper-concentrated Flow. Water. 13(3): 379.
    Link to publisher’s version
    https://doi.org/10.3390/w13030379
    Type
    Article
    Collections
    Engineering and Informatics Publications

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