Your browser does not support JavaScript!
http://iet.metastore.ingenta.com
1887

Foundation-based flow acceleration structures for marine current energy converters

Foundation-based flow acceleration structures for marine current energy converters

For access to this article, please select a purchase option:

Buy article PDF
$19.95
(plus tax if applicable)
Buy Knowledge Pack
10 articles for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Name:*
Email:*
Your details
Name:*
Email:*
Department:*
Why are you recommending this title?
Select reason:
 
 
 
 
 
IET Renewable Power Generation — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

This study presents a preliminary experimental study investigating the potential benefits of foundation-based flow acceleration structures for marine current energy converters (MCECs). Such structures would provide multiple benefits, including; increased device power output, increased foundation footprint and scour protection. Two phases of experimental testing have been conducted. The first series of tests investigated the flow acceleration caused by a ramp foundation without the presence of a MCEC. They were scaled from a shallow tidal flow site and provide evidence that these structures could give power benefits of 12–25% depending on ramp size and flow depth. An optimum ramp size was established based on the suitability of the vertical velocity profiles for energy extraction. The second phase of testing modelled a commercial marine current energy convertor with a gravity-based ramp foundation. The device was modelled using actuator plates to represent the interaction between the device and the surrounding flow field. A proposed single-operation installation method using a concrete ramp foundation is proposed and preliminary stability calculations are presented.

References

    1. 1)
      • European Commission: ‘The exploitation of the tidal and marine currents’. Technical report EUR 16683 EN, Commission of the European Communities, Directorate-General for Science, Research and Development, 1996.
    2. 2)
      • Lunar Energy Ltd.: http://www.lunarenergy.co.uk, accessed November 2009.
    3. 3)
    4. 4)
    5. 5)
      • Roddier, D., Cermelli, C., Aubault, A.: `Electrical power generation by tidal flow acceleration', Proc. 26th Int. Conf. on Offshore Mechanics and Arctic Engineering, 2007, San Diego, California.
    6. 6)
    7. 7)
    8. 8)
    9. 9)
      • Myers, L., Bahaj, A.S., Rawlinson-Smith, R.I., Thomson, M.D.: `The effect of boundary proximity upon the wake structure of horizontal axis marine current turbines', Twenty-Seventh Int. Conf. on Offshore Mechanics and Arctic Engineering, 2008, Estoril, Portugal.
    10. 10)
      • Rusello, P.J., Lohrmann, A., Siegel, E., Maddux, T.: `Improvements in acoustic Doppler velocimetery', Seventh Int. Conf. on Hydroscience and Engineering, 2006, Philadelphia, USA.
    11. 11)
      • A. Betz . Das maximum der theoretisch moglichen ausnutzung des windes durch windmotoren.
    12. 12)
      • B.C. Gerwick . (2000) Construction of marine and offshore structures.
    13. 13)
      • V.T. Chow . (1959) Open channel hydraulics.
    14. 14)
    15. 15)
      • Fraenkel, P.L.: `Power from marine currents', Proc. Institution of Mechanical Engineers – Part A, 2002, 216, p. 1–14.
    16. 16)
      • Bahaj, A.S., Myers, L., Thomson, M.D., Jorge, N.: `Characterising the wake of horizontal axis marine current turbines', Seventh European Wave and Tidal Energy Conf., 2007, Porto, Portugal.
    17. 17)
      • Harrison, M.E., Batten, W.M.L., Myers, L.E., Bahaj, A.S.: `A comparison between CFD simulations and experiments for predicting the far wake of horizontal axis tidal turbines', Proc. Eighth European Wave and Tidal Energy Conf., 2009, Uppsala, Sweden.
    18. 18)
      • T. Burton , D. Sharpe , N. Jenkins . (2001) Wind energy handbook.
    19. 19)
      • Myers, L.: `Operational parameters of horizontal axis marine current turbines', 2005, PhD, University of Southampton, School of Civil Engineering and the Environment.
    20. 20)
      • Thorpe, T.: `The advantages of ducted over unducted turbines', Sixth European Wave and Tidal Energy Conf., 2005, Glasgow, UK, p. 523–528.
    21. 21)
      • ABP.: ‘Atlas of UK marine renewable energy resources: technical report’. ABP Marine Environmental Research Ltd, Department for Business, Enterprise & Regulatory Reform, 2008.
    22. 22)
    23. 23)
      • Whelan, J., Thomson, M., Graham, J.M.R., Peiro, J.: `Modelling of free surface proximity and wave induced velocities around a horizontal axis tidal stream turbine', Seventh European Wave and Tidal Energy Conf., 2007, Porto, Portugal.
    24. 24)
      • P.J. Connel , R.L. George . (1982) The wake of the MOD-0A1 wind turbine at two rotor diameters downwind on 3 December 1981.
    25. 25)
      • DTI, DTI report.: ‘Development, installation and testing of a large scale tidal current turbine’, 2005.
    26. 26)
      • K.R. Dyer . (1986) Coastal and estuarine sediment dynamics.
    27. 27)
    28. 28)
    29. 29)
      • Vermuelen, P.E.J.: `Mixing of simulated wind turbine wakes in turbulent shear flow', 79-09974, TNO, 1979.
    30. 30)
      • A. Chadwick , J. Morfett , M. Borthwick . (2004) Hydraulics in civil and environmental engineering.
    31. 31)
      • A. Lohrmann , R. Cabrera , N. Kraus , M. Asce . (1994) Acoustic-Doppler velocimeter (ADV) for laboratory use.
    32. 32)
    33. 33)
      • L. Myers , A.S. Bahaj , G. Germain , J. Giles . Flow boundary interaction effects for marine current energy conversion devices.
    34. 34)
      • Klaptocz, V.R., Rawlings, G.W., Nabavi, Y., Alidadi, M., Li, Y., Calisal, S.M.: `Numerical and experimental investigation of a ducted vertical axis tidal current turbine', Proc. Seventh European Wave and Tidal Energy Conf., 2007, Porto, Portugal.
    35. 35)
    36. 36)
      • Giles, J.W., Myers, L., Bahaj, A.S., O'Nians, J.: `An experimental study to assess the potential benefits of foundation-based flow acceleration structures for marine current energy converters', Eighth European Wave and Tidal Energy Conf., 2009, Uppsala, Sweden.
    37. 37)
http://iet.metastore.ingenta.com/content/journals/10.1049/iet-rpg.2009.0181
Loading

Related content

content/journals/10.1049/iet-rpg.2009.0181
pub_keyword,iet_inspecKeyword,pub_concept
6
6
Loading
This is a required field
Please enter a valid email address