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Birth of starting vortex and establishment of Kutta condition.

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Title: Birth of starting vortex and establishment of Kutta condition.
Authors: Salazar, David M.1 (AUTHOR), Liu, Tianshu1 (AUTHOR) tianshu.liu@wmich.edu
Source: European Journal of Mechanics B: Fluids. Mar2025, Vol. 110, p19-24. 6p.
Subjects: Viscous flow, Wind tunnels, Optical flow, Aerofoils, Velocity measurements
Abstract: This work provides direct experimental evidence supporting the generation of the airfoil circulation associated with a starting vortex as a viscous-flow process based on global velocity measurements near the trailing edge (TE) of a NACA0012 airfoil at the angle of attack of 6° in a low-speed wind tunnel. The evolving flow topology near the TE exhibits the apparent inviscid flow pattern in a very short initial period, the sequential formation and growth of the starting vortex as a result of near-wall viscous flow development, and the final establishment of the Kutta condition as the starting vortex travels downstream. The evolving flow field in the starting flow over the airfoil is topologically consistent. [ABSTRACT FROM AUTHOR]
Copyright of European Journal of Mechanics B: Fluids is the property of Elsevier B.V. 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.)
Database: Engineering Source
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  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 181542381
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
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  Label: Title
  Group: Ti
  Data: Birth of starting vortex and establishment of Kutta condition.
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  Data: <searchLink fieldCode="AR" term="%22Salazar%2C+David+M%2E%22">Salazar, David M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Tianshu%22">Liu, Tianshu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> tianshu.liu@wmich.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22European+Journal+of+Mechanics+B%3A+Fluids%22">European Journal of Mechanics B: Fluids</searchLink>. Mar2025, Vol. 110, p19-24. 6p.
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  Data: <searchLink fieldCode="DE" term="%22Viscous+flow%22">Viscous flow</searchLink><br /><searchLink fieldCode="DE" term="%22Wind+tunnels%22">Wind tunnels</searchLink><br /><searchLink fieldCode="DE" term="%22Optical+flow%22">Optical flow</searchLink><br /><searchLink fieldCode="DE" term="%22Aerofoils%22">Aerofoils</searchLink><br /><searchLink fieldCode="DE" term="%22Velocity+measurements%22">Velocity measurements</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This work provides direct experimental evidence supporting the generation of the airfoil circulation associated with a starting vortex as a viscous-flow process based on global velocity measurements near the trailing edge (TE) of a NACA0012 airfoil at the angle of attack of 6° in a low-speed wind tunnel. The evolving flow topology near the TE exhibits the apparent inviscid flow pattern in a very short initial period, the sequential formation and growth of the starting vortex as a result of near-wall viscous flow development, and the final establishment of the Kutta condition as the starting vortex travels downstream. The evolving flow field in the starting flow over the airfoil is topologically consistent. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of European Journal of Mechanics B: Fluids is the property of Elsevier B.V. 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.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.euromechflu.2024.11.007
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 6
        StartPage: 19
    Subjects:
      – SubjectFull: Viscous flow
        Type: general
      – SubjectFull: Wind tunnels
        Type: general
      – SubjectFull: Optical flow
        Type: general
      – SubjectFull: Aerofoils
        Type: general
      – SubjectFull: Velocity measurements
        Type: general
    Titles:
      – TitleFull: Birth of starting vortex and establishment of Kutta condition.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Salazar, David M.
      – PersonEntity:
          Name:
            NameFull: Liu, Tianshu
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 03
              Text: Mar2025
              Type: published
              Y: 2025
          Identifiers:
            – Type: issn-print
              Value: 09977546
          Numbering:
            – Type: volume
              Value: 110
          Titles:
            – TitleFull: European Journal of Mechanics B: Fluids
              Type: main
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