Please use this identifier to cite or link to this item:
Title: Rotor aerodynamics in sheared inflow : an analysis of out-of-plane bending moments
Authors: Micallef, Daniel
Sant, Tonio
Keywords: Turbines -- Aerodynamics
Wind turbines -- Aerodynamics
Horizontal axis wind turbines -- Blades
Issue Date: 2018
Publisher: Institute of Physics Publishing Ltd.
Citation: Micallef, D., & Sant, T. (2018). Rotor aerodynamics in sheared inflow : an analysis of out-of-plane bending moments. Journal of Physics: Conference Series, 1037(2), 022027.
Abstract: A sheared wind profile creates an asymmetric wind field and an asymmetric wind turbine wake. Both of these have been described in the past but a study on their implications on the out-of-plane moment on the rotor is still a gap which needs to be addressed. A numerical assessment has been undertaken using a lifting-line free-wake vortex code. Owing to the lack of experimental validation, two other modelling approaches are used to assess the consistency of results - an actuator disc approach and a blade element momentum approach. Results were found to show acceptably good agreement. The line of action of the thrust force is found to be shifted by around 10% upwards above the rotor axis for the extreme shear case of α = 0.55. The wake was found to add to the asymmetry of the wind field by increasing the vertical shift in the line of action by 100% compared to the wind field alone. The results have important implications on the role of the out-of-plane bending moment on the wake kinematics as well as other issues related to fatigue performance of the rotor.
Appears in Collections:Scholarly Works - FacBenED

Files in This Item:
File Description SizeFormat 
Rotor_aerodynamics_in_sheared_inflow_an_analysis_of_out-of-plane_bending_moments_2018.pdf7.01 MBAdobe PDFView/Open

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