Analytical study on an oscillating buoy wave energy converter integrated into a fixed box-type breakwater

Xuanlie Zhao, Dezhi Ning, Chongwei Zhang, Yingyi Liu, Haigui Kang

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

An oscillating buoy wave energy converter (WEC) integrated to an existing box-type breakwater is introduced in this study. The buoy is installed on the existing breakwater and designed to be much smaller than the breakwater in scale, aiming to reduce the construction cost of the WEC. The oscillating buoy works as a heave-type WEC in front of the breakwater towards the incident waves. A power take-off (PTO) system is installed on the topside of the breakwater to harvest the kinetic energy (in heave mode) of the floating buoy. The hydrodynamic performance of this system is studied analytically based on linear potential-flow theory. Effects of the geometrical parameters on the reflection and transmission coefficients and the capture width ratio (CWR) of the system are investigated. Results show that the maximum efficiency of the energy extraction can reach 80% or even higher. Compared with the isolated box-type breakwater, the reflection coefficient can be effectively decreased by using this oscillating buoy WEC, with unchanged transmission coefficient. Thus, the possibility of capturing the wave energy with the oscillating buoy WEC integrated into breakwaters is shown.

Original languageEnglish
Article number3960401
JournalMathematical Problems in Engineering
Volume2017
DOIs
Publication statusPublished - Jan 1 2017

Fingerprint

Breakwaters
Converter
Energy
Transmission Coefficient
Reflection Coefficient
Potential Flow
Potential flow
Takeoff
Kinetic energy
Hydrodynamics
Costs

All Science Journal Classification (ASJC) codes

  • Mathematics(all)
  • Engineering(all)

Cite this

Analytical study on an oscillating buoy wave energy converter integrated into a fixed box-type breakwater. / Zhao, Xuanlie; Ning, Dezhi; Zhang, Chongwei; Liu, Yingyi; Kang, Haigui.

In: Mathematical Problems in Engineering, Vol. 2017, 3960401, 01.01.2017.

Research output: Contribution to journalArticle

@article{6d4339c98de64b88a038b81f0a8a462d,
title = "Analytical study on an oscillating buoy wave energy converter integrated into a fixed box-type breakwater",
abstract = "An oscillating buoy wave energy converter (WEC) integrated to an existing box-type breakwater is introduced in this study. The buoy is installed on the existing breakwater and designed to be much smaller than the breakwater in scale, aiming to reduce the construction cost of the WEC. The oscillating buoy works as a heave-type WEC in front of the breakwater towards the incident waves. A power take-off (PTO) system is installed on the topside of the breakwater to harvest the kinetic energy (in heave mode) of the floating buoy. The hydrodynamic performance of this system is studied analytically based on linear potential-flow theory. Effects of the geometrical parameters on the reflection and transmission coefficients and the capture width ratio (CWR) of the system are investigated. Results show that the maximum efficiency of the energy extraction can reach 80{\%} or even higher. Compared with the isolated box-type breakwater, the reflection coefficient can be effectively decreased by using this oscillating buoy WEC, with unchanged transmission coefficient. Thus, the possibility of capturing the wave energy with the oscillating buoy WEC integrated into breakwaters is shown.",
author = "Xuanlie Zhao and Dezhi Ning and Chongwei Zhang and Yingyi Liu and Haigui Kang",
year = "2017",
month = "1",
day = "1",
doi = "10.1155/2017/3960401",
language = "English",
volume = "2017",
journal = "Mathematical Problems in Engineering",
issn = "1024-123X",
publisher = "Hindawi Publishing Corporation",

}

TY - JOUR

T1 - Analytical study on an oscillating buoy wave energy converter integrated into a fixed box-type breakwater

AU - Zhao, Xuanlie

AU - Ning, Dezhi

AU - Zhang, Chongwei

AU - Liu, Yingyi

AU - Kang, Haigui

PY - 2017/1/1

Y1 - 2017/1/1

N2 - An oscillating buoy wave energy converter (WEC) integrated to an existing box-type breakwater is introduced in this study. The buoy is installed on the existing breakwater and designed to be much smaller than the breakwater in scale, aiming to reduce the construction cost of the WEC. The oscillating buoy works as a heave-type WEC in front of the breakwater towards the incident waves. A power take-off (PTO) system is installed on the topside of the breakwater to harvest the kinetic energy (in heave mode) of the floating buoy. The hydrodynamic performance of this system is studied analytically based on linear potential-flow theory. Effects of the geometrical parameters on the reflection and transmission coefficients and the capture width ratio (CWR) of the system are investigated. Results show that the maximum efficiency of the energy extraction can reach 80% or even higher. Compared with the isolated box-type breakwater, the reflection coefficient can be effectively decreased by using this oscillating buoy WEC, with unchanged transmission coefficient. Thus, the possibility of capturing the wave energy with the oscillating buoy WEC integrated into breakwaters is shown.

AB - An oscillating buoy wave energy converter (WEC) integrated to an existing box-type breakwater is introduced in this study. The buoy is installed on the existing breakwater and designed to be much smaller than the breakwater in scale, aiming to reduce the construction cost of the WEC. The oscillating buoy works as a heave-type WEC in front of the breakwater towards the incident waves. A power take-off (PTO) system is installed on the topside of the breakwater to harvest the kinetic energy (in heave mode) of the floating buoy. The hydrodynamic performance of this system is studied analytically based on linear potential-flow theory. Effects of the geometrical parameters on the reflection and transmission coefficients and the capture width ratio (CWR) of the system are investigated. Results show that the maximum efficiency of the energy extraction can reach 80% or even higher. Compared with the isolated box-type breakwater, the reflection coefficient can be effectively decreased by using this oscillating buoy WEC, with unchanged transmission coefficient. Thus, the possibility of capturing the wave energy with the oscillating buoy WEC integrated into breakwaters is shown.

UR - http://www.scopus.com/inward/record.url?scp=85021648957&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85021648957&partnerID=8YFLogxK

U2 - 10.1155/2017/3960401

DO - 10.1155/2017/3960401

M3 - Article

AN - SCOPUS:85021648957

VL - 2017

JO - Mathematical Problems in Engineering

JF - Mathematical Problems in Engineering

SN - 1024-123X

M1 - 3960401

ER -