The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
권호 표지
DOI QR코드

DOI QR Code

Design and Performance Evaluation of a 10kW Scale Counter-Rotating Tidal Turbine

10kW급 상반전 조류터빈의 설계와 성능에 관한 연구

  • Hoang, Anh Dung (Graduate school of Mokpo National Maritime University) ;
  • Yang, Chang-Jo (Division of Marine Engineering, Mokpo National Maritime University)
  • Received : 2013.12.05
  • Accepted : 2013.12.27
  • Published : 2014.02.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper aims to present the design and performance evaluation of a counter-rotating tidal turbine using CFD and to compare its performance with single rotor. The device scale is 10kW and the rotating part consists of two rotors which rotate in opposite direction. Compared with conventional single rotor, the counter-rotating system shows higher power efficiency at high stream velocity but lower efficiency at low stream velocity. The added counter-rotated rotor together helps improve the energy absorption capacity but has influence on the upstream rotor that reduces its performance. In terms of power capture, the designed counter-rotating tidal turbine is more advantageous in high speed tidal condition.

Keywords

References

  1. M. Ragheb and A. M. Ragheb, 2011, "Wind Turbines Theory - The Betz Equation and Optimal Rotor Tip Speed Ratio," Fundamental and Advanced Topics in Wind Power, ISBN 978-953-307-508-2, pp. 19-38.
  2. Chantharasenawong C., Suwantragul B. and Ruangwiset A., 2008, "Axial Momentum Theory for Turbines with Co-axial Counter Rotating Rotors," Sustainable Development to Save the Earth: Technologies and Strategies Vision 2050, Bangkok, Thailand.
  3. J. A. Clarke, G. Connor, A. D. Grant and C. M. Johnstone, 2006, "Design and Testing of a Contra- Rotating Tidal Current Turbine," DOI: 10.1243/09576509JPE296.
  4. J. A. Clarke, G. Connor, A. D. Grant and C. M. Johnstone, 2007, "Development of a Contra-Rotating Tidal Current Turbine and Analysis of Performance," Proceedings of the 7th European Wave and Tidal Energy Conference (EWTEC), Southampton, ISBN 9789899507937.
  5. D. M. O'Doherty, A. Mason-Jones, T. O'Doherty, C. B. Byrne, 2009, "Considerations of Improved Tidal Stream Turbine Performance Using Double Rows of Contra-Rotating Blades," 8th European Wave and Tidal Energy Conference (EWTEC), Uppsala, Sweden.
  6. D. M. Somers, 2005, "The S822 and S823 Airfoils," National Renewable Energy Laboratory (NREL), USA, NREL/SR-500-36342.
  7. D. M. Somers, 1995, "NREL Airfoil Families for HAWTs," National Renewable Energy Laboratory (NREL), USA, AWEA 1995.
  8. T. Burton, D. Sharpe, N. Jenkins, E. Bossanyi, 2001, "Wind Energy Handbook," John Wiley & Sons Ltd, ISBN 13: 978-0-471-48997-9 (H /B).
  9. W. M. J. Batten, A. S. Bahaj, A. F. Molland, J.R. Chaplin, 2007, "Experimentally validated numerical method for the hydrodynamic design of horizontal axis tidal turbines." Ocean Engineering, Volume 34, pp. 1013-1020. https://doi.org/10.1016/j.oceaneng.2006.04.008

Cited by

  1. A Design of 10 kW Class Counter-Rotating Tidal Turbine Focusing on the Improvement of Operating Performance vol.18, pp.3, 2015, https://doi.org/10.5293/kfma.2015.18.3.053