Hydrodynamic characteristics and parametric optimizations of a hybrid system combining a hinged wave energy converter and a breakwater with a semi-opened moonpool

Fukai Song, Yong Cheng, Saishuai Dai, Zhiming Yuan, Atilla Incecik

Research output: Contribution to journalArticlepeer-review

13 Downloads (Pure)

Abstract

Combining a Wave Energy Converter (WEC) with a floating breakwater to enhance both wave attenuation and the energy capture performance is a plausible pathway to commercializing wave energy technologies. The research introduced a new integrated system that merges a hinged wave energy converter and a breakwater with a semi-opened moonpool. Both the breakwater and the WEC were investigated using multi-Degrees-of-Freedom (DOF) to incorporate a realistic coupling between the two. These two systems were connected through an articulated Power-Take-Off mechanism, and power was harnessed through their relative pitching motion induced by wave loads. The study utilized the Finite Volume Method (FVM) to develop a three-dimensional (3-D) numerical wave tank (NWT) and analyzed the hydrodynamic characteristics of the proposed hybrid system under regular wave loading. Subsequently, design parameters of the two devices, such as the length of the breakwater caisson and the bottom shape of the WEC, were optimized to improve the system's performance. The results indicated that the combination of the two devices enhanced both wave attenuation and energy conversion capacity, compared to using a standalone WEC or breakwater. Notably, the wave power absorption demonstrated a broader effective frequency bandwidth and a higher capture width ratio.
Original languageEnglish
Article number118614
Number of pages15
JournalEnergy Conversion and Management
Volume313
Early online date8 Jun 2024
DOIs
Publication statusE-pub ahead of print - 8 Jun 2024

Keywords

  • wave energy conversion
  • floating breakwater
  • semi-opened moonpool
  • multi-degree-of-freedom
  • coupled effects

Fingerprint

Dive into the research topics of 'Hydrodynamic characteristics and parametric optimizations of a hybrid system combining a hinged wave energy converter and a breakwater with a semi-opened moonpool'. Together they form a unique fingerprint.

Cite this