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The Inverse Vortex Wake Model: A Measurement Analysis Tool.

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Title: The Inverse Vortex Wake Model: A Measurement Analysis Tool.
Authors: Haans, Wouter1, van Kuik, Gijs2, van Bussel, Gerard3
Source: Journal of Solar Energy Engineering. Aug2008, Vol. 130 Issue 3, p18-18. 1p.
Subjects: Compressor blades, Aerodynamics, Aerodynamic load, Vortex motion, Wind tunnel testing, Yawing (Aerodynamics), Axial flow, Wind tunnels, Rotational motion
Abstract: To reduce the level of uncertainty associated with current rotor aerodynamics codes, improved understanding of rotor aerodynamics is required. Wind tunnel measurements on model rotors contribute to advancing our knowledge on rotor aerodynamics. The combined recording of blade loads and rotor wake is desired, because of the coupled blade and wake aerodynamics. In general, however, the small size of model rotors prohibits detailed blade load measurements; only the rotor wake is recorded. To estimate the experimental blade flow conditions, a measurement analysis tool is developed: the inverse vortex wake model. The rotor wake is approximated by a lifting line model, using rotor wake measurements to reconstruct the vortex wake. Conservation of circulation, combined with the Biot-Savart law, allows the induced velocity to be expressed in terms of the bound circulation. The unknown bound circulation can be solved for, since the velocity is known from rotor wake measurements. The inverse vortex wake model is subsequently applied to measurements on the near wake of a model rotor subject to both axial and yawed flow conditions, performed at a TUDelft open jet wind tunnel. The inverse vortex wake model estimates the unsteady experimental blade flow conditions and loads that otherwise would have remained obscured. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Solar Energy Engineering is the property of American Society of Mechanical Engineers 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
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 34136139
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
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  Data: The Inverse Vortex Wake Model: A Measurement Analysis Tool.
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Solar+Energy+Engineering%22">Journal of Solar Energy Engineering</searchLink>. Aug2008, Vol. 130 Issue 3, p18-18. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Compressor+blades%22">Compressor blades</searchLink><br /><searchLink fieldCode="DE" term="%22Aerodynamics%22">Aerodynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Aerodynamic+load%22">Aerodynamic load</searchLink><br /><searchLink fieldCode="DE" term="%22Vortex+motion%22">Vortex motion</searchLink><br /><searchLink fieldCode="DE" term="%22Wind+tunnel+testing%22">Wind tunnel testing</searchLink><br /><searchLink fieldCode="DE" term="%22Yawing+%28Aerodynamics%29%22">Yawing (Aerodynamics)</searchLink><br /><searchLink fieldCode="DE" term="%22Axial+flow%22">Axial flow</searchLink><br /><searchLink fieldCode="DE" term="%22Wind+tunnels%22">Wind tunnels</searchLink><br /><searchLink fieldCode="DE" term="%22Rotational+motion%22">Rotational motion</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: To reduce the level of uncertainty associated with current rotor aerodynamics codes, improved understanding of rotor aerodynamics is required. Wind tunnel measurements on model rotors contribute to advancing our knowledge on rotor aerodynamics. The combined recording of blade loads and rotor wake is desired, because of the coupled blade and wake aerodynamics. In general, however, the small size of model rotors prohibits detailed blade load measurements; only the rotor wake is recorded. To estimate the experimental blade flow conditions, a measurement analysis tool is developed: the inverse vortex wake model. The rotor wake is approximated by a lifting line model, using rotor wake measurements to reconstruct the vortex wake. Conservation of circulation, combined with the Biot-Savart law, allows the induced velocity to be expressed in terms of the bound circulation. The unknown bound circulation can be solved for, since the velocity is known from rotor wake measurements. The inverse vortex wake model is subsequently applied to measurements on the near wake of a model rotor subject to both axial and yawed flow conditions, performed at a TUDelft open jet wind tunnel. The inverse vortex wake model estimates the unsteady experimental blade flow conditions and loads that otherwise would have remained obscured. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Solar Energy Engineering is the property of American Society of Mechanical Engineers 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: 10.1115/1.2931508
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: 18
    Subjects:
      – SubjectFull: Compressor blades
        Type: general
      – SubjectFull: Aerodynamics
        Type: general
      – SubjectFull: Aerodynamic load
        Type: general
      – SubjectFull: Vortex motion
        Type: general
      – SubjectFull: Wind tunnel testing
        Type: general
      – SubjectFull: Yawing (Aerodynamics)
        Type: general
      – SubjectFull: Axial flow
        Type: general
      – SubjectFull: Wind tunnels
        Type: general
      – SubjectFull: Rotational motion
        Type: general
    Titles:
      – TitleFull: The Inverse Vortex Wake Model: A Measurement Analysis Tool.
        Type: main
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          Name:
            NameFull: Haans, Wouter
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            NameFull: van Kuik, Gijs
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            NameFull: van Bussel, Gerard
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            – D: 01
              M: 08
              Text: Aug2008
              Type: published
              Y: 2008
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              Value: 130
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            – TitleFull: Journal of Solar Energy Engineering
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