透水性二重護岸の越波特性の検討

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  • Wave Overtopping Characteristics of Double Seawall with Permeable Bottom
  • トウスイセイ ニジュウ ゴガン ノ エッパ トクセイ ノ ケントウ

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Numerical simulations on the wave overtopping phenomena were carried out for double seawalls in the Beppu Port by using the numerical model of CADMAS-SURF. The double seawall consists of lower front and higher rear walls and permeable bottom between the two walls. The wave overtopping rates were obtained numerically for various permeability conditions of the bottom and compared with the corresponding experimental results. The comparison confirms good reproducibility of the numerical model in the wave overtopping phenomena. The higher permeability can well reduce the wave overtopping rate, but the reduction effect becomes small for the permeability rate of more than 0.5.

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