Response and conversion efficiency of two degrees of freedom wave energy device

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	Response and conversion efficiency of two degrees of freedom wave energy device
	Wu, Bijun1,2 ; Wang, Xing 1,2,3; Diao, Xianghong1,2 ; Peng, Wen1,2 ; Zhang, Yunqiu 1,2
刊名	ocean engineering
	2014-01-15
卷号	76 页码:10-20
关键词	Two-body device Velocity potential Response Conversion efficiency
英文摘要	this paper concerns the response and efficiency of a two-body wave power conversion device. the physical problem of the device is simplified as a forced vibration system with viscous damping in two degrees of freedom. based on the linear wave theory, wave excitation forces, added masses and damping are derived by use of an eigenfunction expansion matching method. the expressions of the response and efficiency are deduced from the motion equations of the device, and the optimal principle is presented as well. numerical results indicate that damping optimal curve has a wave peak that is independent of the spring, and the value of the peak and the corresponding frequency are only related to the calculation conditions. optimal curve presents two peaks when the spring exists, and the corresponding frequency width decreases with the increase of elastic coefficient. the damping is relative small at low frequency peak, while the response is relative high. the damping is relative high at high frequency optimization peak, while the response is relative small and almost smaller than the amplitude of the incident wave. with the decrease of the external damping coefficient, the relative motion amplitude and the efficiency increase, while the width of crest decreases. (c) 2013 elsevier ltd. all rights reserved.
WOS标题词	science & technology ; technology ; physical sciences
类目[WOS]	engineering, marine ; engineering, civil ; engineering, ocean ; oceanography
研究领域[WOS]	engineering ; oceanography
关键词[WOS]	hydrodynamic coefficients ; linear generator ; cylinders ; ocean ; buoy
收录类别	SCI
语种	英语
WOS记录号	WOS:000331155900002
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/10756]
专题	中国科学院广州能源研究所
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China 2.Chinese Acad Sci, Key Lab Renewable Energy & Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China 3.Chinese Acad Sci, Graduated Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wu, Bijun,Wang, Xing,Diao, Xianghong,et al. Response and conversion efficiency of two degrees of freedom wave energy device[J]. ocean engineering,2014,76:10-20.
APA	Wu, Bijun,Wang, Xing,Diao, Xianghong,Peng, Wen,&Zhang, Yunqiu.(2014).Response and conversion efficiency of two degrees of freedom wave energy device.ocean engineering,76,10-20.
MLA	Wu, Bijun,et al."Response and conversion efficiency of two degrees of freedom wave energy device".ocean engineering 76(2014):10-20.