摘要
针对波浪作用下海上浮式建筑物的波漂移力问题,考虑在海上建筑物周围合理地布设小型浮体群以降低海上建筑物的波漂移力。本文基于波浪交互理论和高阶边界元方法,建立了分析三维多浮体间群遮效应的数值模型。计算结果表明:通过优化外围浮体的尺寸可以降低海上建筑物的波漂移力;本数值模型计入了浮体间的波浪相互干涉作用,对群遮效应的预报更加准确和接近工程实际问题。随着入射波频率的不同,发生群遮效应所对应的外围浮体尺寸不同;群遮效应不仅可以降低所需防护海上建筑物的波漂移力,也可以降低整个浮体群的波漂移力。
This study aims to examine the reduction in the wave drift force acting on a floating structure,such as an offshore platform,by appropriate positioning of small floating bodies around the floating structure.To investigate the cloaking phenomenon on3D multiple floating bodies,a numerical model using a combination of wave interaction theory and the higher order boundary element method is introduced.Computed results show that reduction in the wave drift force on the offshore structure is realized using optimized parameters of the surrounding floating bodies.Numerical computations were highly accurate and benefited from considering the interactions between multi bodies,and the optimized parameters of the surrounding bodies were different in relation to the various wave frequencies.Results show that the cloaking phenomenon can reduce the wave drift force on the central structure and on the entire array of floating bodies.
作者
何广华
张志刚
张子豪
张世军
HE Guanghua;ZHANG Zhigang;ZHANG Zihao;ZHANG Shijun(School of Naval Architecture and Ocean Engineering, Harbin Institute of Technology, Weihai 264209, China)
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2017年第11期1676-1681,共6页
Journal of Harbin Engineering University
基金
国家自然科学基金项目(11502059)
大连理工大学海岸和近海工程国家重点实验室开放课题基金项目(LP1513)
哈尔滨工业大学科研创新项目(HIT.NSRIF.201726)
水沙科学与水灾害防治湖南省重点实验室基金(2015SS02)
卫星海洋环境动力学国家重点实验室(国家海洋局第二海洋研究所)项目(SOED1514)
关键词
群遮效应
多浮体
波浪交互理论
高阶边界元方法
波浪干涉
波漂移力
cloaking phenomenon
multiple floating bodies
wave interaction theory
higher order boundary element method
wave interactions
wave drift force
