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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50254

Title: Inertial Effects on the Performance of a Bottom-Hinged Oscillating Wave Surge Converter
Authors: Yi-Chih Chow
Shiaw-Yih Tzang
Jiahn-Horng Chen
Chen-Chou Lin
Contributors: 國立臺灣海洋大學:機械與機電工程學系
Date: 2018-08
Issue Date: 2018-09-27T03:14:18Z
Publisher: ASME Journal of Offshore Mechanics and Arctic Engineering
Abstract: Abstract: This paper theoretically and experimentally investigates the inertial effects of the flap body on the performance of a bottom-hinged Oscillating Wave Surge Converter (BH-OWSC). A 2D hydrodynamic theory for a BH-OWSC based on the assumption of potential flow is developed to show that one simple but critical parameter, i.e. the square of sum of three mechanical-impedance terms associated with the inertial effects, can precisely characterizes the performance trend of a BH-OWSC. Model testing in a small-scaled wave basin follows to validate the theoretical formulations with a flap body consisting of multiple hollow cylinders into which water can be filled individually to alter the values of flap's inertial parameters. The performance of each inertial specification of the flap model is evaluated based on the measurement of the mean water discharge from the hydraulic pump (or the power take-off). Finally, the 'near resonant condition' have been validated experimentally by altering the inertial parameters of the flap. Thus, the above-mentioned parameter is shown to be capable of characterizing the inertial effects on the performance of a BH-OWSC, and the minimization of it will maximize the power capturing performance of a BH-OWSC. Consequently, the parameter can be used for design guidelines of the flap body in its inertial aspect, such as locating the centre of mass, and determining the geometric dimensions of a flap body.
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50254
Appears in Collections:[Department of Mechanical and Mechatronic Engineering] Periodical Articles

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