A Prescribed-Wake Vortex Line Method for Aerodynamic Analysis and Optimization of Multi-Rotor Wind Turbines

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dc.contributorIowa State University. Department of Aerospace Engineeringen
dc.contributorVirginia Tech. Aerospace and Ocean Engineering Departmenten
dc.contributor.authorRosenberg, Aaronen
dc.contributor.authorSharma, Anupamen
dc.date.accessioned2015-07-28T18:27:02Zen
dc.date.available2015-07-28T18:27:02Zen
dc.date.issued2015-06en
dc.description.abstractThe objective of this paper is to extend the xed wake vortex lattice method (VLM), used to evaluate the performance of single-rotor wind turbines (SRWT), for use in analyzing dual-rotor wind turbines (DRWT). VLM models wind turbine blades as bound vortex laments with helical trailing vortices. Using the Biot-Savart law, it is possible to calculate the induction in the plane of rotation allowing for a computationally inexpensive, yet accurate, prediction of blade loading and power performance. This paper presents a method for modeling the additional vortex system introduced by a second rotor while taking into account the singularities that occur when the trailing vortices from the upstream turbine interact with the bound vortices of the downstream turbine. Time averaging is done to account for the rotors operating at di different rotational velocities. This method will be used to predict the performance of the DRWT introduced in Rosenberg et al. (2014). This turbine consists of a large, primary rotor behind and a smaller, auxiliary rotor. Blade loading and power performance obtained with VLM will be compared to the LES results of the same con configuration presented in Moghadassian et al. (2015).en
dc.description.notesSession 2A - Research and Development, and Technologyen
dc.format.extent16 pagesen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRosenberg, A., & Sharma, A. (2015, June). A prescribed-wake vortex line method for aerodynamic analysis and optimization of multi-rotor wind turbines. Paper presented at the North American Wind Energy Academy 2015 Symposium, Blacksburg, VA.en
dc.identifier.urihttp://hdl.handle.net/10919/54656en
dc.language.isoen_USen
dc.publisherVirginia Techen
dc.relation.ispartofNorth American Wind Energy Academy 2015 Symposiumen
dc.rightsIn Copyrighten
dc.rights.holderRosenberg, Aaronen
dc.rights.holderSharma, Anupamen
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.titleA Prescribed-Wake Vortex Line Method for Aerodynamic Analysis and Optimization of Multi-Rotor Wind Turbinesen
dc.typePresentationen
dc.type.dcmitypeTexten

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