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A Comparative Study on the Performance of a Horizontal Axis Ocean Current Turbine Considering Deflector and Operating Depths

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  • Nauman Riyaz Maldar

    (Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, Perak 32610, Malaysia)

  • Cheng Yee Ng

    (Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, Perak 32610, Malaysia)

  • Lee Woen Ean

    (Department of Civil Engineering, Universiti Tenaga Nasional, Selangor 43000, Malaysia)

  • Elif Oguz

    (Hydraulics Laboratory, Civil Engineering Department, Middle East Technical University, METUWIND, Ankara 06800, Turkey)

  • Ahmad Fitriadhy

    (Faculty of Ocean Engineering Technology and Informatics, Universiti Malaya Terengganu, Terengganu 21300, Malaysia)

  • Hooi Siang Kang

    (Marine Technology Center, Faculty of Engineering, Universiti Teknologi Malaysia, Johor 81310, Malaysia)

Abstract

Several different designs and prototypes of ocean current turbines have been tested over recent years. For every design test, emphasis is given to achieving an optimum power output from the flow. In this study, the performance of a Horizontal Axis Ocean Current Turbine (HAOCT) has been investigated using three-dimensional Computational Fluid Dynamics (CFD) simulations for three cases, namely, (1) a turbine without a deflector, (2) a turbine with a deflector, and (3) a turbine with a deflector operating at a higher fluid depth. The turbine design was modeled in DesignModeler software and simulations were carried out in commercial CFD software Flow-3D. The Torque Coefficient (C m ) and Power Coefficient (C p ) for the turbine have been investigated for a certain range of Tip-Speed Ratios (TSRs) in a flow velocity of 0.7 m/s. Furthermore, comparisons have been made to demonstrate the effect of the deflector on the performance of the turbine and the influence of a higher fluid pressure on the same. The results from the simulations indicate that the higher value of C p was achieved for Case 2 as compared to the other two cases. The findings from the study indicate that the use of the deflector enhances the performance of the turbine. Furthermore, a higher fluid pressure acting on the turbine has a significant effect on its performance.

Suggested Citation

  • Nauman Riyaz Maldar & Cheng Yee Ng & Lee Woen Ean & Elif Oguz & Ahmad Fitriadhy & Hooi Siang Kang, 2020. "A Comparative Study on the Performance of a Horizontal Axis Ocean Current Turbine Considering Deflector and Operating Depths," Sustainability, MDPI, vol. 12(8), pages 1-22, April.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:8:p:3333-:d:347860
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    References listed on IDEAS

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