Effects of offshore fringing reefs on the transient harbor resonance excited by solitary waves

OCEAN ENGINEERING

卷:190

Article

Gao, Junliang^1,2,3  Ma, Xiaozhou²  Dong, Guohai²  Zang, Jun³  Ma, Yuxiang²  Zhou, Li¹ 

[1] Jiangsu Univ Sci & Technol, Sch Naval Architecture & Ocean Engn, Zhenjiang 212003, Jiangsu, Peoples R China

[2] Dalian Univ Technol, State Key Lab Coastal & Offshore Engn, Dalian 116024, Peoples R China

[3] Univ Bath, Dept Architecture & Civil Engn, Res Unit Water Environm & Infrastruct Resilience, Bath BA2 7AY, Avon, England

关键词: Harbor resonance;    Harbor oscillations;    Fringing-reef topography;    Numerical simulations;    Boussinesq equations;    FUNWAVE-TVD;   

DOI  :  10.1016/j.oceaneng.2019.106422

来源: Elsevier

【 摘 要 】

In this article, effects of the variation of the offshore reef topography on the transient resonance induced by solitary waves with various wave heights are first investigated. The transient resonance is simulated by a fully nonlinear Boussinesq model, FUNWAVE-TVD. This paper focuses on investigating how the variations of the plane reef-face slope, the reef-ridge width, the lagoon width and the reef-face profile shape affect the wave energy distribution, the total wave energy and the maximum oscillation (runup) inside the harbor. Results indicate that all of the uniformity of the wave energy distribution, the total wave energy and the amplification factor of the incident solitary wave (defined as the ratio of the maximum runup to the incident wave height) are shown to gradually decrease with the plane reef-face slope. For the other three topographical parameters (i.e., the reef-ridge width, the lagoon width and the reef-face profile shape), their influences on the resonant wave parameters inside the harbor becomes more complicated. Not all of the resonant wave parameters inside the harbor (i.e., the uniformity of the wave energy distribution, the total wave energy and the amplification factor of the incident solitary wave) present monotonic changes with these three topographical parameters.

【 授权许可】

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