Analytical and Numerical Analysis of the Dynamics of a Moonpool Platform–Wave Energy Buoy (MP–WEB)

Fankai Kong, Hengxu Liu, Weiming Su, Jingtao Ao, Hailong Chen and Fengmei Jing
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Fankai Kong: College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001, China
Hengxu Liu: College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China
Weiming Su: College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001, China
Jingtao Ao: College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China
Hailong Chen: College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China
Fengmei Jing: College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China

Energies, 2019, vol. 12, issue 21, 1-24

Abstract: In this work the hydrodynamic performance of a novel wave energy converter configuration was analytically and numerically studied by combining a moonpool and a wave energy buoy, called the moonpool platform–wave energy buoy (MP–WEB). A potential flow, semi-analytical approach was adopted to assess the total (incident, diffraction, radiation) wave forces acting on the device, and the wave capture and energy efficiency performance of this configuration was assessed, both in the time and frequency domain. The performance of the two configurations, single float and double float, were analyzed and compared in terms of diffraction force, added mass radiation force, motion, and power in the frequency domain. Using an impulse response function-based (IRF) method, the frequency domain results were converted in the time domain. The same parameters in the time domain were derived and the main results were confirmed. Wave energy conversion efficiency was significantly increased due to the resonance phenomenon inside the moonpool.

Keywords: MP–WEB; frequency domain; time domain; irregular wave; WEC; efficiency (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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