Abstract
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 language | English |
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Article number | 012012 |
Book series | Journal of Physics: Conference Series (Online) |
Volume | 555 |
Number of pages | 8 |
ISSN | 1742-6596 |
DOIs | |
Publication status | Published - 2014 |
Event | The science of Making Torque from Wind 2012: 4th scientific conference - Universität Oldenburg, Oldenburg, Germany Duration: 9 Oct 2012 → 11 Oct 2012 http://www.forwind.de/makingtorque/Home.html |
Conference
Conference | The science of Making Torque from Wind 2012 |
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Location | Universität Oldenburg |
Country/Territory | Germany |
City | Oldenburg |
Period | 09/10/2012 → 11/10/2012 |
Internet address |