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Numerical Investigation of VAWT Airfoil Shapes on Power Extraction and Self-starting Purposes

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Recent Developments in Mathematical, Statistical and Computational Sciences (AMMCS 2019)

Part of the book series: Springer Proceedings in Mathematics & Statistics ((PROMS,volume 343))

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Abstract

The effects of airfoil shapes on the power coefficient and the torque coefficient have been studied for an H-type Darrius vertical axis wind turbine (VAWT). Different types of airfoils were analyzed, and eight of them were selected and divided into two groups. The first group includes the airfoils with camber, including S815, NACA9418, and NACA9415, while the second group including S1048, NACA0018, and NACA0015 have symmetric geometries. The focus of the current study is on two-blade VAWTs because they have higher power coefficient than three or four blades VAWTs. The two-blade VAWTs with selected airfoils were simulated with Computational Fluid Dynamic (CFD) method, and k-\(\upomega \) SST was used as a turbulence model and then grid independency was checked. The numerical investigation indicates that the cambered airfoils produce a higher static torque coefficient than symmetric ones, up to 79.8%, and are qualified for self-starting purposes. In addition, the symmetric airfoils produce higher power coefficient than cambered ones, up to 68.7%, and are qualified for power extraction purposes.

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Author information

Authors and Affiliations

  1. School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, Islamic Republic of Iran

    Sajad Maleki Dastjerdi, Amir HormoziNejad & Kobra Gharali

  2. Waterloo Institute for Sustainable Energy (WISE), University of Waterloo, Waterloo, ON, Canada

    Kobra Gharali & Jatin Nathwani

  3. Department of Management Sciences, Department of Civil and Environmental Engineering, University of Waterloo, Waterloo, ON, Canada

    Jatin Nathwani

Authors
  1. Sajad Maleki Dastjerdi
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  2. Amir HormoziNejad
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  3. Kobra Gharali
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  4. Jatin Nathwani
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Corresponding author

Correspondence to Sajad Maleki Dastjerdi .

Editor information

Editors and Affiliations

  1. Department of Mathematics, Wilfrid Laurier University, Waterloo, ON, Canada

    D. Marc Kilgour

  2. Department of Mathematics and Statistics, University of Guelph, Guelph, ON, Canada

    Herb Kunze

  3. Department of Mathematics, Wilfrid Laurier University, Waterloo, ON, Canada

    Roman Makarov

  4. Department of Mathematics, Wilfrid Laurier University, Waterloo, ON, Canada

    Roderick Melnik

  5. Department of Mathematics, Wilfrid Laurier University, Waterloo, ON, Canada

    Xu Wang

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Maleki Dastjerdi, S., HormoziNejad, A., Gharali, K., Nathwani, J. (2021). Numerical Investigation of VAWT Airfoil Shapes on Power Extraction and Self-starting Purposes. In: Kilgour, D.M., Kunze, H., Makarov, R., Melnik, R., Wang, X. (eds) Recent Developments in Mathematical, Statistical and Computational Sciences. AMMCS 2019. Springer Proceedings in Mathematics & Statistics, vol 343. Springer, Cham. https://doi.org/10.1007/978-3-030-63591-6_35

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