CFD calculations of S809 aerodynamic characteristics

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Steady-state, two-dimensional CFD calculations were made for the S809 laminar-flow, wind-turbine airfoil using the commercial code CFD-ACE. Comparisons of the computed pressure and aerodynamic coefficients were made with wind tunnel data from the Delft University 1.8 m x 1.25 m low-turbulence wind tunnel. This work highlights two areas in CFD that require further investigation and development in order to enable accurate numerical simulations of flow about current generation wind-turbine airfoils: transition prediction and turbulence modeling. The results show that the laminar-to-turbulent transition point must be modeled correctly to get accurate simulations for attached flow. Calculations also show that the standard ... continued below

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7 p.

Creation Information

Wolfe, W.P. & Ochs, S.S. January 1, 1997.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 57 times . More information about this article can be viewed below.

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  • Wolfe, W.P. Sandia National Labs., Albuquerque, NM (United States)
  • Ochs, S.S. Iowa State Univ., Ames, IA (United States)

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

Steady-state, two-dimensional CFD calculations were made for the S809 laminar-flow, wind-turbine airfoil using the commercial code CFD-ACE. Comparisons of the computed pressure and aerodynamic coefficients were made with wind tunnel data from the Delft University 1.8 m x 1.25 m low-turbulence wind tunnel. This work highlights two areas in CFD that require further investigation and development in order to enable accurate numerical simulations of flow about current generation wind-turbine airfoils: transition prediction and turbulence modeling. The results show that the laminar-to-turbulent transition point must be modeled correctly to get accurate simulations for attached flow. Calculations also show that the standard turbulence model used in most commercial CFD codes, the k-{epsilon} model, is not appropriate at angles of attack with flow separation.

Physical Description

7 p.

Notes

OSTI as DE96015309

Source

  • 16. American Society of Mechanical Engineers wind energy symposium, Reno, NV (United States), 6-9 Jan 1997

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  • Other: DE96015309
  • Report No.: SAND--96-2354C
  • Report No.: CONF-970135--15
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 420410
  • Archival Resource Key: ark:/67531/metadc676373

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • January 1, 1997

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

Description Last Updated

  • April 14, 2016, 3:20 p.m.

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Wolfe, W.P. & Ochs, S.S. CFD calculations of S809 aerodynamic characteristics, article, January 1, 1997; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc676373/: accessed June 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.