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Preliminary Performance Assessment of a Twin-rotor Horizontal Axis Wind Turbine Using Fast Aerodynamic Methods

Michels, Benedikt (2018) Preliminary Performance Assessment of a Twin-rotor Horizontal Axis Wind Turbine Using Fast Aerodynamic Methods. 21. DGLR-Fachsymposium der STAB, 6.-7. Nov. 2018, Darmstadt, Germany.

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Abstract

The present work describes a simplified computational setup for the preliminary estimation of the power output of an overlapping twin-rotor horizontal axis wind turbine. A blade element theory based rotor code coupled to a lifting-line vortex-lattice downwash model is used for the prediction of the turbine behavior. The relation of power output versus rotor overlap of the twin-rotor configuration is compared to a single isolated rotor at identical operation conditions. An acceptable amount of rotor overlap in terms of power loss is found to allow for a close spacing. An analysis of the wake-induced velocity seeks to shed some light on the aerodynamic interaction.

Item URL in elib:https://elib.dlr.de/124525/
Document Type:Conference or Workshop Item (Speech)
Title:Preliminary Performance Assessment of a Twin-rotor Horizontal Axis Wind Turbine Using Fast Aerodynamic Methods
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Michels, BenediktBenedikt.Michels (at) dlr.deUNSPECIFIED
Date:7 November 2018
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:wind turbine, twin-rotor, aerodynamic interaction, free-vortex wake
Event Title:21. DGLR-Fachsymposium der STAB
Event Location:Darmstadt, Germany
Event Type:national Conference
Event Dates:6.-7. Nov. 2018
Organizer:DGLR
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Wind Energy
DLR - Research area:Energy
DLR - Program:E SW - Solar and Wind Energy
DLR - Research theme (Project):E - Wind Energy
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems
Deposited By: Michels, Benedikt
Deposited On:12 Dec 2018 15:57
Last Modified:12 Dec 2018 15:57

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