Characteristic of tsunami force acting on shelter with mooring

Ardianti, Andi; Mutsuda, Hidemi; Kawawaki, Kento; Doi, Yoshihiro; Fukuhara, Takuso

doi:10.1016/j.apor.2017.02.005

Cited by 6 publications

(1 citation statement)

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“…Using the same approach, Crespo et al [80] analyzed the hydrodynamic characteristics of a floating oscillating water column converter in a regular wave field. Ardianti et al [81] coupled the ISPH method and the extended distinct element method to investigate the tsunami wave force on and the movement behavior of floating shelters with different structural shapes and mooring layouts. and the industry-oriented SPHinXsys [60].…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on the Hydrodynamic Characteristics of a Double-Row Floating Breakwater Composed of a Pontoon and an Airbag

Cheng

Liu

Zhang

et al. 2021

JMSE

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By adding a cylindrical airbag on the leeward side of a cuboid pontoon, a new-type double-row floating breakwater is designed to improve the wave attenuation performance, and its hydrodynamic characteristics are studied through numerical simulations. First, based on the smoothed particle hydrodynamics (SPH) method, a numerical model used to simulate the interaction between waves and moored floating bodies is built. The fluid motion is governed by the Navier–Stokes equations. The motion of the floating body is computed according to Newton’s second law. The modified dynamic boundary condition is employed to treat the solid boundary. The lumped-mass method is adopted to implement the mooring system. Then, two physical model experiments on waves interaction with cuboid and dual cylindrical floating pontoons are reproduced. By comparing the experimental and numerical wave transmission coefficients, wave reflection coefficients, response amplitude operators and mooring force, the reliability of the numerical model is validated. Finally, the validated numerical model is applied to study the influence of separation distance and wave parameters on the hydrodynamic characteristics of the double-row floating breakwater. The results indicate that the optimal separation distance between pontoon and airbag is 0.75 times the wavelength. At such separation distance and within the concerned 1–4 m wave heights and 4–7 s wave periods, the pontoon-airbag system presents better wave attenuation performance than a single pontoon. This improvement weakens as wave height increases while it strengthens as the wave period increases. In addition, the double-row floating breakwater is more effective in a high-wave regime than in a low-wave regime. In the case of short waves, attention should be paid to the stability and mooring reliability of the seaward pontoon, while in the case of long waves, care needs to be taken of the leeward airbag.

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Section: Introductionmentioning

confidence: 99%