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Numerical Simulation on Sand Accumulation behind Artificial Reefs and Enhancement of Windblown Sand to Hinterland

In: Numerical Simulation - Advanced Techniques for Science and Engineering

Author

Listed:
  • Takaaki Uda
  • Takuya Yokota
  • Yasuhito Noshi

Abstract

Salients were formed in the lee of two artificial reefs (submerged breakwaters) constructed on Kimigahama Beach in Chiba Prefecture, Japan, owing to the wave-sheltering effect of the reefs, and then, a significant amount of fine sand was transported inland from the salients by wind action. In this study, not only shoreline changes after the installation of the two artificial reefs but also beach changes caused by windblown sand were predicted using a model, in which the BG model (a model for predicting three-dimensional beach changes due to waves based on Bagnold's concept) is combined with a cellular automaton method. Reproduction calculation was carried out on the basis of field data. Beach changes after the artificial reefs were removed were also predicted and the effect of beach nourishment was investigated. It was concluded that landward sand transport by wind is accelerated when wave-sheltering structures such as an artificial reef are constructed on a coast composed of fine sand, and such an effect can be successfully predicted by using the present model.

Suggested Citation

  • Takaaki Uda & Takuya Yokota & Yasuhito Noshi, 2023. "Numerical Simulation on Sand Accumulation behind Artificial Reefs and Enhancement of Windblown Sand to Hinterland," Chapters, in: Ali Soofastaei (ed.), Numerical Simulation - Advanced Techniques for Science and Engineering, IntechOpen.
    • Handle: RePEc:ito:pchaps:276585
    DOI: 10.5772/intechopen.107014
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    Keywords

    artificial reef; windblown sand; predictive model; BG model; cellular automaton method; Kimigahama Beach;
    All these keywords.

    JEL classification:

    • C60 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - General

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