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  • Response of a porous seabed to water waves over permeable submerged breakwaters with Bragg reflection

    Author(s)
    Zhang, J-S
    Jeng, D-S
    Liu, PL-F
    Zhang, C
    Zhang, Y
    Griffith University Author(s)
    Jeng, Dong-Sheng
    Year published
    2012
    Metadata
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    Abstract
    An integrated model is developed for the investigation of wave motion and seabed response around multiple permeable submerged breakwaters subject to different levels of Bragg reflection. In this study, the Volume-Averaged Reynolds-Averaged Navier-Stokes (VARANS) equations are used to describe the non-linear interaction between waves and permeable structures, while Biot's "u-p" approximation theory is adopted for predicting the wave-induced seabed response. The numerical results show that the reflection coefficient is highly dependent on the wave period and the configuration/number of arrayed breakwaters. Wave motion and its ...
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    An integrated model is developed for the investigation of wave motion and seabed response around multiple permeable submerged breakwaters subject to different levels of Bragg reflection. In this study, the Volume-Averaged Reynolds-Averaged Navier-Stokes (VARANS) equations are used to describe the non-linear interaction between waves and permeable structures, while Biot's "u-p" approximation theory is adopted for predicting the wave-induced seabed response. The numerical results show that the reflection coefficient is highly dependent on the wave period and the configuration/number of arrayed breakwaters. Wave motion and its induced seabed response (in terms of pore fluid pressure, vertical effective stress and liquefaction potential) around breakwaters can be largely changed due to Bragg reflection and energy dissipation of permeable structures. With the same incident wave conditions, the maximum liquefaction area decreases in size with an increasing soil permeability or degree of saturation.
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    Journal Title
    Ocean Engineering
    Volume
    43
    DOI
    https://doi.org/10.1016/j.oceaneng.2012.01.024
    Subject
    Civil Geotechnical Engineering
    Oceanography
    Civil Engineering
    Maritime Engineering
    Publication URI
    http://hdl.handle.net/10072/56041
    Collection
    • Journal articles

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