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Effect of Blade Diameter on the Performance of Horizontal-Axis Ocean Current Turbine

Author

Listed:
  • Mansoor Ahmed Zaib

    (Department of Mechanical Engineering, International Islamic University, Islamabad 44000, Pakistan)

  • Arbaz Waqar

    (Department of Mechanical Engineering, International Islamic University, Islamabad 44000, Pakistan)

  • Shoukat Abbas

    (Department of Mechanical Engineering, International Islamic University, Islamabad 44000, Pakistan)

  • Saeed Badshah

    (Department of Mechanical Engineering, International Islamic University, Islamabad 44000, Pakistan)

  • Sajjad Ahmad

    (Department of Mechanical Engineering, International Islamic University, Islamabad 44000, Pakistan)

  • Muhammad Amjad

    (Department of Mechanical Engineering, International Islamic University, Islamabad 44000, Pakistan)

  • Seyed Saeid Rahimian Koloor

    (Institute for Nanomaterials, Advanced Technologies and Innovation (CXI), Technical University of Liberec (TUL), Studentska 2, 461 17 Liberec, Czech Republic)

  • Mohamed Eldessouki

    (Institute for Nanomaterials, Advanced Technologies and Innovation (CXI), Technical University of Liberec (TUL), Studentska 2, 461 17 Liberec, Czech Republic
    Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biomimetic, Membranes and Textiles, CH-9014 St. Gallen, Switzerland
    Faculty of Engineering, Mansoura University, Mansoura 35516, Egypt)

Abstract

The horizontal-axis ocean current turbine under investigation is a three-blade rotor that uses the flow of water to rotate its blade. The mechanical energy of a turbine is converted into electrical energy using a generator. The horizontal-axis ocean current turbine provides a nongrid robust and sustainable power source. In this study, the blade design is optimized to achieve higher efficiency, as the blade design of the hydrokinetic turbine has a considerable effect on its output efficiency. All the simulations of this turbine are performed on ANSYS software, based on the Reynolds Averaged Navier–Stokes (RANS) equations. Three-dimensional (CFD) simulations are then performed to evaluate the performance of the rotor at a steady state. To examine the turbine’s efficiency, the inner diameter of the rotor is varied in all three cases. The attained result concludes that the highest C m value is about 0.24 J at a tip-speed ratio (TSR) of 0.8 at a constant speed of 0.7 m/s. From 1 TSR onward, a further decrease occurs in the power coefficient. That point indicates the optimum velocity at which maximum power exists. The pressure contour shows that maximum dynamic pressure exists at the convex side of the advancing blade. The value obtained at that place is −348 Pa for case 1. When the dynamic pressure increases, the power also increases. The same trend is observed for case 2 and case 3, with the same value of optimum TSR = 0.8.

Suggested Citation

  • Mansoor Ahmed Zaib & Arbaz Waqar & Shoukat Abbas & Saeed Badshah & Sajjad Ahmad & Muhammad Amjad & Seyed Saeid Rahimian Koloor & Mohamed Eldessouki, 2022. "Effect of Blade Diameter on the Performance of Horizontal-Axis Ocean Current Turbine," Energies, MDPI, vol. 15(15), pages 1-13, July.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:15:p:5323-:d:869121
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    References listed on IDEAS

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