Study of Tip-loss Using an Inverse 3D Navier-Stokes Method

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Abstract

The tip-correction for air-screws described by Prandtl (1919) and implemented into the Blade Element Momentum (BEM) theory by Glauert (1930), is founded on certain assumptions which the present analysis seeks to overcome. In the paper we propose a method to derive the tip-correction by solving the 3D Navier-Stokes equations combined with the actuator line technique where blade loading is applied using an inverse method. The numerical simulations shows that the method captures the tip-correction when comparing with the theories of Prandtl and Goldstein, however, the accuracy of the obtained results reveal that further refinements still is needed. Keywords: Tip-loss; Actuator line; 3D Navier-Stokes methods.
Original languageEnglish
Title of host publicationProc. European Wind Energy Conference & Exhibition
Place of PublicationCD-ROM, www.ewea.org
PublisherEuropean Wind Energy Association (EWEA)
Publication date2003
Publication statusPublished - 2003
Event2003 European Wind Energy Conference and Exhibition - Madrid, Spain
Duration: 16 Jun 200319 Jun 2003

Workshop

Workshop2003 European Wind Energy Conference and Exhibition
CountrySpain
CityMadrid
Period16/06/200319/06/2003

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