Preliminary Development of a Pseudo-3D Testing Technique for the Prediction of Extreme Loads on an Oscillating Wave Surge Converter

Alan McKinley, Paul Lamont-Kane, Alan Henry, Matthew Folley, Jonathan Nicholson, Trevor Whittaker, Bjoern Elsaesser

Research output: Contribution to conferencePaper

Abstract

If wave energy is to become a sustainable and economic
power source it is essential that extreme loading mechanisms
experienced by Wave Energy Converters are well understood.
Previous work completed at Queen’s University Belfast in
collaboration with Aquamarine Power Ltd. highlighted slamming
as an extreme loading mechanism experienced by pitching flap
type devices. Testing has previously been undertaken in both 2-
and 3-dimensional environments. This paper undertakes
qualitative and quantitative comparisons of extreme loading
investigations undertaken within those two environments. The
results show that the hydrodynamics and magnitudes of slams
experienced by the device in a 2-dimensional environment vary
significantly from those experienced in the more realistic 3-
dimensional environment. It is therefore undesirable to utilise 2-
dimensional testing for extreme load quantification. It is also
noted that visual inspection of the event (which has proven to be
essential in identifying the hydrodynamics of many load
characteristics observed) is significantly more difficult during 3-
dimensional testing. As a result of the findings, ongoing research
at Queen’s University Belfast seeks to develop a new testing
methodology in an attempt to realize the benefits of both the 2- and
3-dimensional experimental setups from a single experimental
setup. The technique has been termed Pseudo-3-dimensional, or
2½D testing. Preliminary results obtained from early tests
undertaken are presented in this paper.
Original languageEnglish
Number of pages9
Publication statusPublished - 2016
Event3rd Asian Wave and Tidal Energy Conference, 2016 - Marina Bay Sands, Singapore
Duration: 24 Oct 201628 Oct 2016
Conference number: 3

Conference

Conference3rd Asian Wave and Tidal Energy Conference, 2016
Abbreviated titleAWTEC 2016
CountrySingapore
Period24/10/201628/10/2016

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Testing
Hydrodynamics
Inspection

Keywords

  • Wave Energy
  • Extreme Loading
  • Wave Loading
  • Slamming
  • Physical Testing
  • Wave Tank Testing
  • Oscillating Wave Surge Converter
  • Oyster

Cite this

McKinley, A., Lamont-Kane, P., Henry, A., Folley, M., Nicholson, J., Whittaker, T., & Elsaesser, B. (2016). Preliminary Development of a Pseudo-3D Testing Technique for the Prediction of Extreme Loads on an Oscillating Wave Surge Converter. Paper presented at 3rd Asian Wave and Tidal Energy Conference, 2016, Singapore.
McKinley, Alan ; Lamont-Kane, Paul ; Henry, Alan ; Folley, Matthew ; Nicholson, Jonathan ; Whittaker, Trevor ; Elsaesser, Bjoern. / Preliminary Development of a Pseudo-3D Testing Technique for the Prediction of Extreme Loads on an Oscillating Wave Surge Converter. Paper presented at 3rd Asian Wave and Tidal Energy Conference, 2016, Singapore.9 p.
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abstract = "If wave energy is to become a sustainable and economicpower source it is essential that extreme loading mechanismsexperienced by Wave Energy Converters are well understood.Previous work completed at Queen’s University Belfast incollaboration with Aquamarine Power Ltd. highlighted slammingas an extreme loading mechanism experienced by pitching flaptype devices. Testing has previously been undertaken in both 2-and 3-dimensional environments. This paper undertakesqualitative and quantitative comparisons of extreme loadinginvestigations undertaken within those two environments. Theresults show that the hydrodynamics and magnitudes of slamsexperienced by the device in a 2-dimensional environment varysignificantly from those experienced in the more realistic 3-dimensional environment. It is therefore undesirable to utilise 2-dimensional testing for extreme load quantification. It is alsonoted that visual inspection of the event (which has proven to beessential in identifying the hydrodynamics of many loadcharacteristics observed) is significantly more difficult during 3-dimensional testing. As a result of the findings, ongoing researchat Queen’s University Belfast seeks to develop a new testingmethodology in an attempt to realize the benefits of both the 2- and3-dimensional experimental setups from a single experimentalsetup. The technique has been termed Pseudo-3-dimensional, or2½D testing. Preliminary results obtained from early testsundertaken are presented in this paper.",
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McKinley, A, Lamont-Kane, P, Henry, A, Folley, M, Nicholson, J, Whittaker, T & Elsaesser, B 2016, 'Preliminary Development of a Pseudo-3D Testing Technique for the Prediction of Extreme Loads on an Oscillating Wave Surge Converter', Paper presented at 3rd Asian Wave and Tidal Energy Conference, 2016, Singapore, 24/10/2016 - 28/10/2016.

Preliminary Development of a Pseudo-3D Testing Technique for the Prediction of Extreme Loads on an Oscillating Wave Surge Converter. / McKinley, Alan; Lamont-Kane, Paul; Henry, Alan; Folley, Matthew; Nicholson, Jonathan; Whittaker, Trevor; Elsaesser, Bjoern.

2016. Paper presented at 3rd Asian Wave and Tidal Energy Conference, 2016, Singapore.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Preliminary Development of a Pseudo-3D Testing Technique for the Prediction of Extreme Loads on an Oscillating Wave Surge Converter

AU - McKinley, Alan

AU - Lamont-Kane, Paul

AU - Henry, Alan

AU - Folley, Matthew

AU - Nicholson, Jonathan

AU - Whittaker, Trevor

AU - Elsaesser, Bjoern

PY - 2016

Y1 - 2016

N2 - If wave energy is to become a sustainable and economicpower source it is essential that extreme loading mechanismsexperienced by Wave Energy Converters are well understood.Previous work completed at Queen’s University Belfast incollaboration with Aquamarine Power Ltd. highlighted slammingas an extreme loading mechanism experienced by pitching flaptype devices. Testing has previously been undertaken in both 2-and 3-dimensional environments. This paper undertakesqualitative and quantitative comparisons of extreme loadinginvestigations undertaken within those two environments. Theresults show that the hydrodynamics and magnitudes of slamsexperienced by the device in a 2-dimensional environment varysignificantly from those experienced in the more realistic 3-dimensional environment. It is therefore undesirable to utilise 2-dimensional testing for extreme load quantification. It is alsonoted that visual inspection of the event (which has proven to beessential in identifying the hydrodynamics of many loadcharacteristics observed) is significantly more difficult during 3-dimensional testing. As a result of the findings, ongoing researchat Queen’s University Belfast seeks to develop a new testingmethodology in an attempt to realize the benefits of both the 2- and3-dimensional experimental setups from a single experimentalsetup. The technique has been termed Pseudo-3-dimensional, or2½D testing. Preliminary results obtained from early testsundertaken are presented in this paper.

AB - If wave energy is to become a sustainable and economicpower source it is essential that extreme loading mechanismsexperienced by Wave Energy Converters are well understood.Previous work completed at Queen’s University Belfast incollaboration with Aquamarine Power Ltd. highlighted slammingas an extreme loading mechanism experienced by pitching flaptype devices. Testing has previously been undertaken in both 2-and 3-dimensional environments. This paper undertakesqualitative and quantitative comparisons of extreme loadinginvestigations undertaken within those two environments. Theresults show that the hydrodynamics and magnitudes of slamsexperienced by the device in a 2-dimensional environment varysignificantly from those experienced in the more realistic 3-dimensional environment. It is therefore undesirable to utilise 2-dimensional testing for extreme load quantification. It is alsonoted that visual inspection of the event (which has proven to beessential in identifying the hydrodynamics of many loadcharacteristics observed) is significantly more difficult during 3-dimensional testing. As a result of the findings, ongoing researchat Queen’s University Belfast seeks to develop a new testingmethodology in an attempt to realize the benefits of both the 2- and3-dimensional experimental setups from a single experimentalsetup. The technique has been termed Pseudo-3-dimensional, or2½D testing. Preliminary results obtained from early testsundertaken are presented in this paper.

KW - Wave Energy

KW - Extreme Loading

KW - Wave Loading

KW - Slamming

KW - Physical Testing

KW - Wave Tank Testing

KW - Oscillating Wave Surge Converter

KW - Oyster

M3 - Paper

ER -

McKinley A, Lamont-Kane P, Henry A, Folley M, Nicholson J, Whittaker T et al. Preliminary Development of a Pseudo-3D Testing Technique for the Prediction of Extreme Loads on an Oscillating Wave Surge Converter. 2016. Paper presented at 3rd Asian Wave and Tidal Energy Conference, 2016, Singapore.