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The wake structure in a 2D grid installation of the horizontal axis micro wind turbines

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  • Hossain, M.Z.
  • Hirahara, H.
  • Nonomura, Y.
  • Kawahashi, M.

Abstract

In order to develop applications for micro-wind turbines, an experimental analysis of the flow field around integrated micro-wind turbines was performed. The wake flows of a single turbine and 5×5 array unit were measured by using hot-wire and ultrasonic anemometers and particle image velocimetry (PIV). The present array of turbines follows a fundamental lattice layout; however, it has the flexibility to optimize its layout according to the environmental conditions. hot-wire and ultrasonic anemometers and PIV measurements were used for stand-alone turbines and their integrated systems. Comparisons between the mean velocity field and turbulent intensity were described for stand-alone full-scale and 1/10-scale wind turbine models. Thereafter, a typical array of the 1/10-scale model was assumed and its wake flow was investigated in a wind tunnel. The velocity profile and turbulence behind the array were measured and studied at different streamwise locations. The scale effect and model similarities were discussed. The experimental results show that a zone exists with constant and linear wake deficit ratios in the downstream regions.

Suggested Citation

  • Hossain, M.Z. & Hirahara, H. & Nonomura, Y. & Kawahashi, M., 2007. "The wake structure in a 2D grid installation of the horizontal axis micro wind turbines," Renewable Energy, Elsevier, vol. 32(13), pages 2247-2267.
    • Handle: RePEc:eee:renene:v:32:y:2007:i:13:p:2247-2267
    DOI: 10.1016/j.renene.2006.11.016
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    References listed on IDEAS

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    1. Clausen, P.D. & Wood, D.H., 1999. "Research and development issues for small wind turbines," Renewable Energy, Elsevier, vol. 16(1), pages 922-927.
    2. Ebert, P.R. & Wood, D.H., 1997. "The near wake of a model horizontal-axis wind turbine—I. Experimental arrangements and initial results," Renewable Energy, Elsevier, vol. 12(3), pages 225-243.
    3. Hopkins, William, 1999. "Small to medium size wind turbines: Local use of a local resource," Renewable Energy, Elsevier, vol. 16(1), pages 944-947.
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    Cited by:

    1. McTavish, S. & Feszty, D. & Nitzsche, F., 2013. "A study of the performance benefits of closely-spaced lateral wind farm configurations," Renewable Energy, Elsevier, vol. 59(C), pages 128-135.
    2. Rafael V. Rodrigues & Corinne Lengsfeld, 2019. "Development of a Computational System to Improve Wind Farm Layout, Part II: Wind Turbine Wakes Interaction," Energies, MDPI, vol. 12(7), pages 1-27, April.
    3. Rafael V. Rodrigues & Corinne Lengsfeld, 2019. "Development of a Computational System to Improve Wind Farm Layout, Part I: Model Validation and Near Wake Analysis," Energies, MDPI, vol. 12(5), pages 1-24, March.

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