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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50256

Title: Parametric design methodology for maximizing energy capture of a bottom-hinged flap-type WEC with medium wave resources
Authors: Yi-Chih Chow
Yu-Chi Chang
Da-Wei Chen
Chen-Chou Lin
Shaiw-Yih Tzang
Contributors: 國立臺灣海洋大學:機械與機電工程學系
Keywords: Capture factor
Bottom-hinged flap-type WEC
Flap width
Parametric data-fitting scheme
Resonance mode
Wave resource
Date: 2018-03
Issue Date: 2018-09-27T03:26:09Z
Publisher: Renewable Energy
Abstract: Abstract: This paper describes a parametric design methodology for maximizing the capture factor (CF) of a bottom-hinged flap-type wave energy converter (BHF-WEC). The general equation for CF is first derived using the damped-harmonic-oscillator model. Second, correspondences between the general and the 2-D ideal CF equations are established. Then, a scheme is proposed to account for any effects apart from the 2-D ideal modeling with three parameters, which constitute the basis for fitting any data series stemming from either numerical simulations or experiments. Once these three parameters are evaluated from data fitting, the maximum CF and its occurring conditions can be found. In the present study, WEC-Sim simulations are conducted for a series of finite rectangular BHF-WECs with effects of PTO and varying width (B) for two thicknesses (d) under two characteristic wave lengths (L) of the medium wave resources that Taiwan possesses. It is found that for B/L smaller than about 0.30, the maximum CF in resonance mode, CFres, is greater than 1.0 and much higher than that not in resonance mode, CFopt, which is always below 1.0. The captured power index in resonance mode, CFres × (B/L), is almost invariant in B/L = 0.11–0.30. Several BHF-WEC design guidelines can be deduced from these results.
Relation: 126 pp.605-616
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50256
Appears in Collections:[機械與機電工程學系] 期刊論文

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