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  • A process-based model for sediment transport under various wave and current conditions

    Author(s)
    Zhang, Chi
    Zheng, Jin-Hai
    Wang, Yi-Gang
    Zhang, Meng-Tao
    Jeng, Dong-Sheng
    Zhang, Ji-Sheng
    Griffith University Author(s)
    Jeng, Dong-Sheng
    Year published
    2011
    Metadata
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    Abstract
    The purpose of this study is to investigate the capability of a newly developed process-based model for sediment transport under a wide variety of wave and current conditions. The model is based on the first-order boundary layer equation and the sediment advection-diffusion equation. In particular, a modified low Reynolds number k-e model is coupled to provide the turbulence closure. Detailed model verifications have been performed by simulating a number of laboratory experiments, covering a considerable range of hydrodynamic conditions such as sinusoidal waves, asymmetric waves and wave-current interactions. The model ...
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    The purpose of this study is to investigate the capability of a newly developed process-based model for sediment transport under a wide variety of wave and current conditions. The model is based on the first-order boundary layer equation and the sediment advection-diffusion equation. In particular, a modified low Reynolds number k-e model is coupled to provide the turbulence closure. Detailed model verifications have been performed by simulating a number of laboratory experiments, covering a considerable range of hydrodynamic conditions such as sinusoidal waves, asymmetric waves and wave-current interactions. The model provides satisfactory numerical results which agree well with the measured results, including the time-averaged/dependent sediment concentration profiles and sediment flux profiles, as well as the time series of concentration at given elevations. The observed influences of wave orbital velocity amplitude, wave period and sediment grain size are correctly reproduced, indicating that the fundamental physical mechanisms of those processes are properly represented in the model. It is revealed that the present model is capable of predicting sediment transport under a wide range of wave and current conditions, and can be used to further study the morphodynamic processes in real coastal regions.
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    Journal Title
    nternational Journal of Sediment Research
    Volume
    26
    Issue
    4
    DOI
    https://doi.org/10.1016/S1001-6279(12)60008-0
    Subject
    Civil Geotechnical Engineering
    Geology
    Soil Sciences
    Publication URI
    http://hdl.handle.net/10072/63820
    Collection
    • Journal articles

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