The Effect of Mounting Vortex Generators on the DTU 10MW Reference Wind Turbine Blade

Witold Robert Skrzypinski, Mac Gaunaa, Christian Bak

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    Abstract

    The aim of the current work is to analyze possible advantages of mounting Vortex Generators (VG's) on a wind turbine blade. Specifically, the project aims at investigating at which radial sections of the DTU 10 MW Reference Wind Turbine blade it is most beneficial to mount the VG's in order to increase the Annual Energy Production (AEP) under realistic conditions. The present analysis was carried out in several steps: (1) The clean two dimensional airfoil characteristics were first modified to emulate the effect of all possible combinations of VG's (1% high at suction side x/c=0.2-0.25) and two Leading Edge Roughness (LER) values along the whole blade span. (2) The combinations from Step 1, including the clean case were subsequently modified to take into account three dimensional effects. (3) BEM computations were carried out to determine the aerodynamic rotor performance using each of the datasets from Step 2 along the whole blade span for all wind speeds in the turbine control scheme. (4) Employing the assumption of radial independence between sections of the blades, and using the results of the BEM computations described in Step 3, it is possible to determine for each radial position independently whether it is beneficial to install VG's in the smooth and LER cases, respectively. The results indicated that surface roughness that corresponds to degradation of the power curve may to some extent be mitigated by installation of VG's. The present results also indicated that the optimal VG configuration in terms of maximizing AEP depends on the degree of severity of the LER. This is because, depending on the condition of blade surface, installation of VG's on an incorrect blade span or installation of VG's too far out on the blade may cause loss in AEP. The results also indicated that the worse condition of the blade surface, the more gain may be obtained from the installation of VG's.
    Original languageEnglish
    Article number012034
    Book seriesJournal of Physics: Conference Series (Online)
    Volume524
    Issue number1
    Number of pages10
    ISSN1742-6596
    DOIs
    Publication statusPublished - 2014
    Event5th International Conference on The Science of Making Torque from Wind 2014 - Technical University of Denmark, Copenhagen, Denmark
    Duration: 10 Jun 201420 Jun 2014
    Conference number: 5
    http://indico.conferences.dtu.dk/conferenceDisplay.py?confId=138

    Conference

    Conference5th International Conference on The Science of Making Torque from Wind 2014
    Number5
    LocationTechnical University of Denmark
    Country/TerritoryDenmark
    CityCopenhagen
    Period10/06/201420/06/2014
    Internet address

    Bibliographical note

    Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Published under licence by IOP Publishing Ltd

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