Please use this identifier to cite or link to this item:
Title: Effects of geometry and tip speed ratio on the HAWT blade's root flow
Authors: Akay, Busra
Micallef, Daniel
Simao Ferreira, Carlos
van Bussel, Gerard
Keywords: Horizontal axis wind turbines -- Blades
Particle image velocimetry
Turbine -- Blades
Axial flow
Issue Date: 2014
Publisher: IOP Publishing Ltd.
Citation: Akay, B., Micallef, D., Simao Ferreira, C. J., & Van Bussel, G. J. W. (2014). Effects of geometry and tip speed ratio on the HAWT blade's root flow. In Journal of Physics: Conference Series, 555 (1), 1-14.
Abstract: In this study, the effect of the parameters playing a role in the root flow behavior of HAWT are only partly understood. To better reveal the root flow properties, this study presents the progression of HAWT blade root flow at two different blade geometries and at two different tip speed ratios. The effects of the geometry and the tip speed ratio on the root flow behavior and on the evolution of the root flow features are investigated. This study aims to answer the following questions: (i) What are the effects of the blade geometry and tip speed ratio on the root flow behavior? (ii) How are the blade wake and the root vortex evolution affected by the change of these parameters? The analysis of the velocity fields shows that the radial flow behavior changes with different blade geometries but a remarkable difference in the radial flow behavior is not observed with the change of tip speed ratio. The formation of the wake is different at three test cases because of different loading that the blades are encountered. From the circulation distribution along the blades, while a strong root vortex can be observed in Blade 1, the bound vorticity along Blade 2 builds up gradually when moving outboard, and do not show a trace of a strong root vortex.
Appears in Collections:Scholarly Works - FacBenED

Files in This Item:
File Description SizeFormat 
Effects of geometry and tip speed ratio on the HAWT blade's root flow.pdf3.84 MBAdobe PDFView/Open

Items in OAR@UM are protected by copyright, with all rights reserved, unless otherwise indicated.