Experimental Investigations and CFD Simulations of the Blade Section Pitch Angle Effect on the Performance of a Horizontal-Axis Hydrokinetic Turbine

  • Edwin Lenin Chica Arrieta Universidad de Antioquia
  • Cristian Cardona-Mancilla Instituto Tecnológico Metropolitano (ITM)
  • J. Slayton Universidad de Antioquia
  • F. Romero Universidad de Antioquia
  • Edwar Torres Universidad de Antioquia
  • Sergio Agudelo Universidad de Antioquia
  • Juan Jose Arbelaez Instituto Tecnológico Metropolitano (ITM)
  • Diego Hincapie Instituto Tecnológico Metropolitano (ITM)

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Abstract

Three twisted blades of a 1 kW prototype hydrokinetic turbine were designed based on the Blade Element Momentum (BEM) theory with a tip speed ratio of 6.25; water velocity of 1.5 m/s; angle of attack and pitch angle of 5 and 0°, respectively; a power coefficient of 0.4382 and a drive train efficiency of 70%. S822 hydrofoil was used to generate the coordinates of the blade cross-section. Experimental investigations and Computational Fluid Dynamics (CFD) simulations were carried out to estimate the performance of the blade design and know the effect of the section pitch angle on the performance of a horizontal-axis hydrokinetic turbine. The obtained results showed that the increase in the section pitch angle enhanced the performance up to a certain value. Further increase in the section pitch angle resulted in a low performance and a reduction of the rotation velocity, which in turn requires a high gearing ratio of the transmission system.

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Author Biographies
Edwin Lenin Chica Arrieta

Departamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Antioquia (UdeA),
Calle 70 No. 52-21, Medellín, Colombia

Cristian Cardona-Mancilla

Instituto Tecnológico Metropolitano (ITM), Calle 73 No. 76-354, Medellín, Colombia

J. Slayton

Departamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Antioquia (UdeA),
Calle 70 No. 52-21, Medellín, Colombia

F. Romero

Departamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Antioquia (UdeA),
Calle 70 No. 52-21, Medellín, Colombia

Edwar Torres

Departamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Antioquia (UdeA),
Calle 70 No. 52-21, Medellín, Colombia

Sergio Agudelo

Departamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Antioquia (UdeA),
Calle 70 No. 52-21, Medellín, Colombia

Juan Jose Arbelaez

Instituto Tecnológico Metropolitano (ITM), Calle 73 No. 76-354, Medellín, Colombia

Diego Hincapie

Instituto Tecnológico Metropolitano (ITM), Calle 73 No. 76-354, Medellín, Colombia

Published
Vol 22 No 5, Sep 30, 2018
How to Cite
E. Chica Arrieta, C. Cardona-Mancilla, J. Slayton, F. Romero, E. Torres, S. Agudelo, J. Arbelaez, and D. Hincapie, “Experimental Investigations and CFD Simulations of the Blade Section Pitch Angle Effect on the Performance of a Horizontal-Axis Hydrokinetic Turbine”, Eng. J., vol. 22, no. 5, pp. 141-154, Sep. 2018.

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