Wave loads on the foundation of a bottom-hinged modular flap structure

Laurie Wilkinson, Kenneth Doherty, Alan Henry, Viviana Russo, Sandy Day, Trevor Whittaker

Research output: Contribution to conferencePaper

Abstract

Large loads result in expensive foundations which are a substantial proportion of the capital cost of flap-type Wave Energy Converters (WECs). Devices such as Oyster 800, currently deployed at the European Marine Energy Centre (EMEC), comprise a single flap for the full width of the machine. Splitting a flap-type device into smaller vertical flap modules, to make a ‘modular-flap’, might reduce the total foundation loads, whilst still providing acceptable performance in terms of energy conversion.
This paper investigates the foundation loads of an undamped modular-flap device, comparing them to those for a rigid flap of an equivalent width. Physical modelling in a wave tank is used, with loads recorded using a six degree of freedom (DoF) load cell. Both fatigue and extreme loading analysis was conducted. The rotations of the flaps were also recorded, using a motion-tracking system.
Original languageEnglish
Publication statusPublished - Sep 2014
EventInternational Conference on Offshore Renewable Energy - Glasgow, United Kingdom
Duration: 15 Sep 201417 Sep 2014

Conference

ConferenceInternational Conference on Offshore Renewable Energy
CountryUnited Kingdom
CityGlasgow
Period15/09/201417/09/2014

Fingerprint

Flaps
Energy conversion
Fatigue of materials
Costs

Keywords

  • oscillating wave surge converter
  • Wave Energy Converter
  • wave tank
  • modular flap
  • Oyster

Cite this

Wilkinson, L., Doherty, K., Henry, A., Russo, V., Day, S., & Whittaker, T. (2014). Wave loads on the foundation of a bottom-hinged modular flap structure. Paper presented at International Conference on Offshore Renewable Energy, Glasgow, United Kingdom.
Wilkinson, Laurie ; Doherty, Kenneth ; Henry, Alan ; Russo, Viviana ; Day, Sandy ; Whittaker, Trevor. / Wave loads on the foundation of a bottom-hinged modular flap structure. Paper presented at International Conference on Offshore Renewable Energy, Glasgow, United Kingdom.
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abstract = "Large loads result in expensive foundations which are a substantial proportion of the capital cost of flap-type Wave Energy Converters (WECs). Devices such as Oyster 800, currently deployed at the European Marine Energy Centre (EMEC), comprise a single flap for the full width of the machine. Splitting a flap-type device into smaller vertical flap modules, to make a ‘modular-flap’, might reduce the total foundation loads, whilst still providing acceptable performance in terms of energy conversion.This paper investigates the foundation loads of an undamped modular-flap device, comparing them to those for a rigid flap of an equivalent width. Physical modelling in a wave tank is used, with loads recorded using a six degree of freedom (DoF) load cell. Both fatigue and extreme loading analysis was conducted. The rotations of the flaps were also recorded, using a motion-tracking system.",
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author = "Laurie Wilkinson and Kenneth Doherty and Alan Henry and Viviana Russo and Sandy Day and Trevor Whittaker",
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note = "International Conference on Offshore Renewable Energy ; Conference date: 15-09-2014 Through 17-09-2014",

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Wilkinson, L, Doherty, K, Henry, A, Russo, V, Day, S & Whittaker, T 2014, 'Wave loads on the foundation of a bottom-hinged modular flap structure', Paper presented at International Conference on Offshore Renewable Energy, Glasgow, United Kingdom, 15/09/2014 - 17/09/2014.

Wave loads on the foundation of a bottom-hinged modular flap structure. / Wilkinson, Laurie; Doherty, Kenneth; Henry, Alan; Russo, Viviana; Day, Sandy; Whittaker, Trevor.

2014. Paper presented at International Conference on Offshore Renewable Energy, Glasgow, United Kingdom.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Wave loads on the foundation of a bottom-hinged modular flap structure

AU - Wilkinson, Laurie

AU - Doherty, Kenneth

AU - Henry, Alan

AU - Russo, Viviana

AU - Day, Sandy

AU - Whittaker, Trevor

PY - 2014/9

Y1 - 2014/9

N2 - Large loads result in expensive foundations which are a substantial proportion of the capital cost of flap-type Wave Energy Converters (WECs). Devices such as Oyster 800, currently deployed at the European Marine Energy Centre (EMEC), comprise a single flap for the full width of the machine. Splitting a flap-type device into smaller vertical flap modules, to make a ‘modular-flap’, might reduce the total foundation loads, whilst still providing acceptable performance in terms of energy conversion.This paper investigates the foundation loads of an undamped modular-flap device, comparing them to those for a rigid flap of an equivalent width. Physical modelling in a wave tank is used, with loads recorded using a six degree of freedom (DoF) load cell. Both fatigue and extreme loading analysis was conducted. The rotations of the flaps were also recorded, using a motion-tracking system.

AB - Large loads result in expensive foundations which are a substantial proportion of the capital cost of flap-type Wave Energy Converters (WECs). Devices such as Oyster 800, currently deployed at the European Marine Energy Centre (EMEC), comprise a single flap for the full width of the machine. Splitting a flap-type device into smaller vertical flap modules, to make a ‘modular-flap’, might reduce the total foundation loads, whilst still providing acceptable performance in terms of energy conversion.This paper investigates the foundation loads of an undamped modular-flap device, comparing them to those for a rigid flap of an equivalent width. Physical modelling in a wave tank is used, with loads recorded using a six degree of freedom (DoF) load cell. Both fatigue and extreme loading analysis was conducted. The rotations of the flaps were also recorded, using a motion-tracking system.

KW - oscillating wave surge converter

KW - Wave Energy Converter

KW - wave tank

KW - modular flap

KW - Oyster

M3 - Paper

ER -

Wilkinson L, Doherty K, Henry A, Russo V, Day S, Whittaker T. Wave loads on the foundation of a bottom-hinged modular flap structure. 2014. Paper presented at International Conference on Offshore Renewable Energy, Glasgow, United Kingdom.