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This study investigates the effects of beach deformation on wind-blown sand transport through physical model experiments and numerical simulations. The experiments were conducted using a 34-m-long open channel, focusing on three scenarios: flat surfaces (Experiment A), sloped surfaces (Experiment B), and sloped surfaces with wave action (Experiment C). A piston-type wave paddle and a blower were used to simulate wind and wave conditions. Wind-blown sand transport rates were measured, and each scenario's experimental coefficients for Kawamura's equation were calculated. The results showed a gradual increase in \(K\) values, with 0.482 for Experiment A, 0.538 for Experiment B, and 0.617 for Experiment C, highlighting the influence of slope and wave action. Numerical simulations were performed using the CADMAS-STR-STM model, which integrates fluid, structure, and sediment transport. The simulation results were consistent with experimental data, demonstrating the increasing trend of wind-blown sand transport due to wave effects.

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Numerical and Experimental Investigation of the Impact of Beach Deformation on Wind-Blown Sand

  • 会议论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年

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  • Kosuke Nobusawa,
  • Akiyoshi Katano,
  • Taiki Sekiguchi,
  • Soma Kakizawa,
  • Yota Enomoto,
  • Taro Arikawa

摘要

This study investigates the effects of beach deformation on wind-blown sand transport through physical model experiments and numerical simulations. The experiments were conducted using a 34-m-long open channel, focusing on three scenarios: flat surfaces (Experiment A), sloped surfaces (Experiment B), and sloped surfaces with wave action (Experiment C). A piston-type wave paddle and a blower were used to simulate wind and wave conditions. Wind-blown sand transport rates were measured, and each scenario's experimental coefficients for Kawamura's equation were calculated. The results showed a gradual increase in \(K\) values, with 0.482 for Experiment A, 0.538 for Experiment B, and 0.617 for Experiment C, highlighting the influence of slope and wave action. Numerical simulations were performed using the CADMAS-STR-STM model, which integrates fluid, structure, and sediment transport. The simulation results were consistent with experimental data, demonstrating the increasing trend of wind-blown sand transport due to wave effects.