Comparisons between LES and wind tunnel hot-wire measurements of a NACA 0015 airfoil

Wei Jun Zhu, Wen Zhong Shen, Franck Bertagnolio, Jens Nørkær Sørensen

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    Abstract

    Large-eddy simulations (LES) are carried out for flow over a NACA 0015 airfoil at AoA = 8o and chord based Reynolds number of 1.71106. To accurately simulate the complex flow at the suction side of the airfoil, a reasonably large number of grid points are required. The computational mesh is constructed in a wind tunnel similar as the condition where the experiments were carried out. The goal of this study is to validate the LES model against detailed measurements. The simulations are performed with in-house EllipSys3D code on high performance computers. Numerical study are focused on the stability and accuracy of the LES simulations on various mesh configurations. The spanwise grid spacing was found important to produce correct flow disturbance along the airfoil span, which further affects the turbulent energy distribution.
    Original languageEnglish
    Title of host publicationProceedings of EWEA 2012 - European Wind Energy Conference & Exhibition
    Number of pages8
    PublisherEuropean Wind Energy Association (EWEA)
    Publication date2012
    Pages975-982
    Publication statusPublished - 2012
    EventEWEC 2012 - European Wind Energy Conference & Exhibition - Copenhagen, Denmark
    Duration: 16 Apr 201219 Apr 2012
    http://events.ewea.org/annual2012/

    Conference

    ConferenceEWEC 2012 - European Wind Energy Conference & Exhibition
    Country/TerritoryDenmark
    CityCopenhagen
    Period16/04/201219/04/2012
    Internet address

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