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Rotor Blade Design, Number of Blades, Performance Characteristics

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Handbook of Wind Energy Aerodynamics

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Abstract

The design of the blade planform relates to the choices about the main geometrical characteristics of the blade, namely, chord, twist and blade thickness. In addition to these main quantities, the blade sweep, prebend and cone angle can be considered part of the planform design, though from a purely aerodynamic point of view, their effect on the overall performance of the wind turbine is limited. For a full three-dimensional description of the blade geometry, we also need to define the pitching axis and the stacking axis (i.e. the relative positioning of sections with regard to the pitching axis). These parameters do not affect the 2D aerodynamics of the individual blade sections, but they can have a secondary effect on 3-D aerodynamics.

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Notes

  1. 1.

    For an arbitrary iopt = 5∘ in the plot.

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Author information

Authors and Affiliations

  1. iWind Renewables, Gerakas, Greece

    Giorgos Sieros

Authors
  1. Giorgos Sieros
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Correspondence to Giorgos Sieros .

Editor information

Editors and Affiliations

  1. Fraunhofer Institute for Wind Energy Systems, Oldenburg, Germany

    Bernhard Stoevesandt

  2. TNO Energy Transition, Netherlands Organisation for Applied Sci, Petten, The Netherlands

    Gerard Schepers

  3. Siemens Gamesa Renewable Energy, Brande, Denmark

    Peter Fuglsang

  4. Goldwind Americas, Chicago, IL, USA

    Yuping Sun

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Sieros, G. (2022). Rotor Blade Design, Number of Blades, Performance Characteristics. In: Stoevesandt, B., Schepers, G., Fuglsang, P., Sun, Y. (eds) Handbook of Wind Energy Aerodynamics. Springer, Cham. https://doi.org/10.1007/978-3-030-31307-4_4

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