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Cumulative effect of airfoil-shaped vortex generators and blade aspect ratio on the aerodynamics of wind turbine blades.

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Title: Cumulative effect of airfoil-shaped vortex generators and blade aspect ratio on the aerodynamics of wind turbine blades.
Authors: Palanivel, Hariprasanth1 (AUTHOR) haribabupv354@gmail.com, Mukherjee, Rinku1 (AUTHOR)
Source: Wind Engineering. Jun2026, Vol. 50 Issue 3, p653-673. 21p.
Subjects: Vortex generators, Wind turbine blades, Aerodynamics, Reynolds number, Lift (Aerodynamics), Wind tunnel testing
Abstract: Wind tunnel experiments are conducted on 3D rectangular blades of s809 airfoil section with four different aspect ratios AR = 1.2, 2.4, 3.6, 4.78, at four different Reynolds numbers Re = 0.75 × 105, 1.0 × 105, 1.25 × 105, 1.5 × 105, over angles of attack, 0 < α < 20°. Both clean blades and blades with Clark-Y airfoil-shaped vortex generators (CAVGs) are tested to measure their 3D aerodynamic characteristics. The combined effects of aspect ratio, Reynolds number, and angle of attack on blades with CAVGs are studied, focusing on C L max and α stall . Results show that CAVGs delay baseline blades' stall, enhance C L and C L max characteristics without significant drag penalty and without loss in aerodynamic stability. It is also observed that a medium- AR blade with CAVGs achieves aerodynamic performance comparable to a clean blade of higher aspect ratio. [ABSTRACT FROM AUTHOR]
Copyright of Wind Engineering is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 194489430
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PubTypeId: academicJournal
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  Data: Cumulative effect of airfoil-shaped vortex generators and blade aspect ratio on the aerodynamics of wind turbine blades.
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  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22Wind+Engineering%22&quot;&gt;Wind Engineering&lt;/searchLink&gt;. Jun2026, Vol. 50 Issue 3, p653-673. 21p.
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  Data: &lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Vortex+generators%22&quot;&gt;Vortex generators&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Wind+turbine+blades%22&quot;&gt;Wind turbine blades&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Aerodynamics%22&quot;&gt;Aerodynamics&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Reynolds+number%22&quot;&gt;Reynolds number&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Lift+%28Aerodynamics%29%22&quot;&gt;Lift (Aerodynamics)&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Wind+tunnel+testing%22&quot;&gt;Wind tunnel testing&lt;/searchLink&gt;
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  Data: Wind tunnel experiments are conducted on 3D rectangular blades of s809 airfoil section with four different aspect ratios AR = 1.2, 2.4, 3.6, 4.78, at four different Reynolds numbers Re = 0.75 &#215; 105, 1.0 &#215; 105, 1.25 &#215; 105, 1.5 &#215; 105, over angles of attack, 0 &lt; α &lt; 20&#176;. Both clean blades and blades with Clark-Y airfoil-shaped vortex generators (CAVGs) are tested to measure their 3D aerodynamic characteristics. The combined effects of aspect ratio, Reynolds number, and angle of attack on blades with CAVGs are studied, focusing on C L max and α stall . Results show that CAVGs delay baseline blades&#39; stall, enhance C L and C L max characteristics without significant drag penalty and without loss in aerodynamic stability. It is also observed that a medium- AR blade with CAVGs achieves aerodynamic performance comparable to a clean blade of higher aspect ratio. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: &lt;i&gt;Copyright of Wind Engineering is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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        Value: 10.1177/0309524X251397290
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 21
        StartPage: 653
    Subjects:
      – SubjectFull: Vortex generators
        Type: general
      – SubjectFull: Wind turbine blades
        Type: general
      – SubjectFull: Aerodynamics
        Type: general
      – SubjectFull: Reynolds number
        Type: general
      – SubjectFull: Lift (Aerodynamics)
        Type: general
      – SubjectFull: Wind tunnel testing
        Type: general
    Titles:
      – TitleFull: Cumulative effect of airfoil-shaped vortex generators and blade aspect ratio on the aerodynamics of wind turbine blades.
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      – PersonEntity:
          Name:
            NameFull: Palanivel, Hariprasanth
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          Name:
            NameFull: Mukherjee, Rinku
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          Dates:
            – D: 01
              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
          Identifiers:
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              Value: 0309524X
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              Value: 50
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            – TitleFull: Wind Engineering
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