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Experimental studies on effect of guide vane shape on performance of impulse turbine for wave energy conversion

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  • Thakker, A.
  • Dhanasekaran, T.S.
  • Ryan, J.

Abstract

This paper presents the experimental results of effect of guide vane shape on performance of an impulse turbine for wave energy conversion. Two types of guide vanes are considered in the present study: two-dimensional (2D) guide vanes and three-dimensional (3D) guide vanes. The previous investigations by the authors revealed that the 2D guide vanes cause large recirculation zones at leading edge of downstream guide vanes, which affect the performance of turbine considerably. In order to improve the performance of turbine, three-dimensional guide vanes are designed based on free-vortex theory. Detailed aerodynamic and performance tests have been conducted on impulse turbine with the two types of guide vanes. The experiments have been conducted under various inlet conditions such as steady, sinusoidal and random (real Sea) flows. From the results, it was proved that the efficiency of impulse turbine has been improved for 4.5% points due to 3D guide vanes. The hysteric characteristic has been noticed from the experimental results of impulse turbine with sinusoidal and random flow inlet conditions. Furthermore, it was investigated that the performance of turbine is considerably more during deceleration of inlet flow than the acceleration in a half cycle of sinusoidal wave.

Suggested Citation

  • Thakker, A. & Dhanasekaran, T.S. & Ryan, J., 2005. "Experimental studies on effect of guide vane shape on performance of impulse turbine for wave energy conversion," Renewable Energy, Elsevier, vol. 30(15), pages 2203-2219.
    • Handle: RePEc:eee:renene:v:30:y:2005:i:15:p:2203-2219
    DOI: 10.1016/j.renene.2005.02.002
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    References listed on IDEAS

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    1. Setoguchi, T. & Kinoue, Y. & Kim, T.H. & Kaneko, K. & Inoue, M., 2003. "Hysteretic characteristics of Wells turbine for wave power conversion," Renewable Energy, Elsevier, vol. 28(13), pages 2113-2127.
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    1. Elatife, Khalid & El Marjani, Abdellatif, 2019. "Efficiency improvement of a self-rectifying radial impulse turbine for wave energy conversion," Energy, Elsevier, vol. 189(C).
    2. Gonçalves, Rafael A.A.C. & Teixeira, Paulo R.F. & Didier, Eric & Torres, Fernando R., 2020. "Numerical analysis of the influence of air compressibility effects on an oscillating water column wave energy converter chamber," Renewable Energy, Elsevier, vol. 153(C), pages 1183-1193.
    3. Gomes, R.P.F. & Henriques, J.C.C. & Gato, L.M.C. & Falcão, A.F.O., 2012. "Multi-point aerodynamic optimization of the rotor blade sections of an axial-flow impulse air turbine for wave energy conversion," Energy, Elsevier, vol. 45(1), pages 570-580.
    4. Jayashankar, V. & Anand, S. & Geetha, T. & Santhakumar, S. & Jagadeesh Kumar, V. & Ravindran, M. & Setoguchi, T. & Takao, M. & Toyota, K. & Nagata, S., 2009. "A twin unidirectional impulse turbine topology for OWC based wave energy plants," Renewable Energy, Elsevier, vol. 34(3), pages 692-698.
    5. Thakker, A. & Jarvis, J. & Sahed, A., 2009. "Design charts for impulse turbine wave energy extraction using experimental data," Renewable Energy, Elsevier, vol. 34(10), pages 2264-2270.
    6. Pereiras, Bruno & López, Iván & Castro, Francisco & Iglesias, Gregorio, 2015. "Non-dimensional analysis for matching an impulse turbine to an OWC (oscillating water column) with an optimum energy transfer," Energy, Elsevier, vol. 87(C), pages 481-489.
    7. Liu, Hua & Wang, Weijun & Wen, Yadong & Mao, Longbo & Wang, Wenqiang & Mi, Hongju, 2019. "A novel axial flow self-rectifying turbine for use in wave energy converters," Energy, Elsevier, vol. 189(C).
    8. Yongyao Luo & Alexandre Presas & Zhengwei Wang, 2019. "Numerical Analysis of the Influence of Design Parameters on the Efficiency of an OWC Axial Impulse Turbine for Wave Energy Conversion," Energies, MDPI, vol. 12(5), pages 1-12, March.
    9. Thakker, A. & Abdulhadi, R., 2008. "The performance of Wells turbine under bi-directional airflow," Renewable Energy, Elsevier, vol. 33(11), pages 2467-2474.
    10. Hong-Goo Kang & Young-Ho Lee & Chan-Joo Kim & Hyo-Dong Kang, 2022. "Design Optimization of a Cross-Flow Air Turbine for an Oscillating Water Column Wave Energy Converter," Energies, MDPI, vol. 15(7), pages 1-15, March.

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