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Effects of turbine damping on performance of an impulse turbine for wave energy conversion under different sea conditions using numerical simulation techniques

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  • Thakker, Ajit
  • Usmani, Zia
  • Dhanasekaran, T.S

Abstract

This paper presents the work carried out to predict the behavior of a 0.6 m impulse turbine with fixed guide vanes with 0.6 hub to tip (H/T) ratio under real sea conditions.This enhances the earlier work done by authors on the subject by including the effects of damping applied by the turbine. Real wave data for different wave sites were used as the input data. A typical oscillating water column (OWC) geometry has been used for this simulation. Standard numerical techniques were employed to solve the non-linear behavior of the sea waves. Considering the quasi-steady assumption, uni-directional steady flow experimental data were used to simulate the turbine characteristics under irregular unsteady flow conditions. The test rotor used for this simulation consisted of 30 blades with elliptical profile with a set of symmetric, fixed guide vanes on both up-stream and down-stream sections of the rotor, with 26 vanes each. The results show that the performance of this type of turbine depends on the level of damping applied by the turbine and the prevailing wave site conditions. The objective of this paper is to predict the effects of applied damping on the behavior of impulse turbine under irregular, unsteady conditions for wave power conversion using numerical simulation.

Suggested Citation

  • Thakker, Ajit & Usmani, Zia & Dhanasekaran, T.S, 2004. "Effects of turbine damping on performance of an impulse turbine for wave energy conversion under different sea conditions using numerical simulation techniques," Renewable Energy, Elsevier, vol. 29(14), pages 2133-2151.
    • Handle: RePEc:eee:renene:v:29:y:2004:i:14:p:2133-2151
    DOI: 10.1016/j.renene.2004.03.015
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    Cited by:

    1. 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.
    2. Ying, Pei & Chen, Yong Kang & Xu, Yi Geng, 2015. "An aerodynamic analysis of a novel small wind turbine based on impulse turbine principles," Renewable Energy, Elsevier, vol. 75(C), pages 37-43.
    3. Ying, P. & Chen, Y.K. & Xu, Y.G. & Tian, Y., 2015. "Computational and experimental investigations of an omni-flow wind turbine," Applied Energy, Elsevier, vol. 146(C), pages 74-83.
    4. 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.

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