Dynamic response of a hexagon-type multi-body floating photovoltaic under three types of freak waves

IF 6.4 1区工程技术 Q1 ENGINEERING, CIVIL

Engineering Structures Pub Date : 2025-09-30 DOI:10.1016/j.engstruct.2025.121488

Guoyan Li , Yan Li , Qiang Zhu , Haoran Li , Ouming Su , Yiting Feng , Bin Wang , Hang Meng

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引用次数: 0

Abstract

Photovoltaic systems are structurally fragile. Therefore, in the development of floating photovoltaic (FPV), a primary concern is the potential damage caused by extreme sea conditions, especially by freak waves. To investigate the effects of freak waves on a FPV, a coupled buoy-connector-fender-mooring numerical model is established to study the dynamic response of a FPV assembly consisting of 4 hexagon-type modules under three types of freak waves (crest-type, trough-type, and close-type). The results indicate a prompt increase in wavelet energy across five regions in response to the impact of the freak waves, including high and low frequency regions, single and double wave dominant frequency regions, as well as natural frequency region. Compared with the other two types, the trough-type freak wave results in smaller sway/heave motions and mooring line tension but larger roll motion. The crest-type and close-type freak waves, on the other hand, induce more significant increase in energy in the low frequency regime. Near the impact region, FPV assembly faces an increased risk of green water. Among the three, the trough-type freak wave creates smaller air gaps but for a shorter duration.

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三种异常波作用下六边形多体漂浮光伏的动力响应

光伏系统在结构上很脆弱。因此，在浮式光伏发电（FPV）的发展中，主要关注的是极端海况，特别是异常海浪造成的潜在损害。为了研究异形波对FPV的影响，建立了浮筒-连接器-护舷-系泊耦合数值模型，研究了由4个六边形模块组成的FPV组件在三种异形波（波峰型、槽型和封闭型）作用下的动力响应。结果表明，在异常波的影响下，小波能量在高、低频区、单双波主频区、固有频率区等5个区域迅速增加。与其他两种类型相比，槽型畸形波导致的摇沉运动和系缆张力较小，但导致的横摇运动较大。另一方面，波峰型和闭合型异常波在低频区引起的能量增加更为显著。在受影响区域附近，光伏组件面临的绿水风险增加。其中，槽型异常波产生的气隙较小，但持续时间较短。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Engineering Structures 工程技术-工程：土木

CiteScore

10.20

自引率

14.50%

发文量

1385

审稿时长

67 days

期刊介绍： Engineering Structures provides a forum for a broad blend of scientific and technical papers to reflect the evolving needs of the structural engineering and structural mechanics communities. Particularly welcome are contributions dealing with applications of structural engineering and mechanics principles in all areas of technology. The journal aspires to a broad and integrated coverage of the effects of dynamic loadings and of the modelling techniques whereby the structural response to these loadings may be computed. The scope of Engineering Structures encompasses, but is not restricted to, the following areas: infrastructure engineering; earthquake engineering; structure-fluid-soil interaction; wind engineering; fire engineering; blast engineering; structural reliability/stability; life assessment/integrity; structural health monitoring; multi-hazard engineering; structural dynamics; optimization; expert systems; experimental modelling; performance-based design; multiscale analysis; value engineering. Topics of interest include: tall buildings; innovative structures; environmentally responsive structures; bridges; stadiums; commercial and public buildings; transmission towers; television and telecommunication masts; foldable structures; cooling towers; plates and shells; suspension structures; protective structures; smart structures; nuclear reactors; dams; pressure vessels; pipelines; tunnels. Engineering Structures also publishes review articles, short communications and discussions, book reviews, and a diary on international events related to any aspect of structural engineering.