Development of new tip-loss corrections based on vortex theory and vortex methods

Emmanuel Simon Pierre Branlard, Mac Gaunaa

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    A new analytical formulation of the tip-loss factor is established based on helical vortex lament solutions. The derived tip-loss factor can be applied to wind-turbines, propellers or other rotary wings. Similar numerical formulations are used to assess the influence of wake expansion on tip-losses. Theodorsen's theory is successfully applied for the first time to assess the wake expansion behind a wind turbine. The tip-loss corrections obtained are compared with the ones from Prandtl and Glauert and implemented within a new Blade Element Momentum(BEM) code. Wake expansion is seen to reduce tip-losses and have a greater influence than wake distortion.
    Original languageEnglish
    Article number012012
    Book seriesJournal of Physics: Conference Series (Online)
    Number of pages8
    Publication statusPublished - 2014
    EventThe science of Making Torque from Wind 2012: 4th scientific conference - Universität Oldenburg, Oldenburg, Germany
    Duration: 9 Oct 201211 Oct 2012


    ConferenceThe science of Making Torque from Wind 2012
    LocationUniversität Oldenburg
    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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