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An Analytical Procedure for Evaluating Aerodynamics of Wind Turbines in Yawed Flow

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dc.contributorIowa State University. Department of Aerospace Engineeringen
dc.contributorSukra Helitek Inc.en
dc.contributorVirginia Tech. Aerospace and Ocean Engineering Departmenten
dc.contributor.authorRajagopalan, R. Ganeshen
dc.contributor.authorGuntupalli, Kanchanen
dc.contributor.authorFischels, Mathew V.en
dc.contributor.authorNovak, Luke A.en
dc.date.accessioned2015-07-28T18:27:13Zen
dc.date.available2015-07-28T18:27:13Zen
dc.date.issued2015-06en
dc.description.abstractA new analytical method for evaluating the performance of wind turbines in yawed flow is presented. The method, based on momentum theory, relates the yaw angle to the tip-path-plane orientation of the turbine rotor and the non-dimensional deficit velocity. The analytical calculations are compared with results from Rot3DC, a kernel within the RotCFD software package, an integrated environment for rotors. Rot3DC, a 3-D Navier-Stokes based module, can simulate one or more Horizontal Axis Wind Turbines (HAWT) and uses the concept of momentum sources to compute the turbine performance and flowfield in a self contained manner. Rot3DC simulations are validated against NREL Phase-II experiments. Analytical results for yawed turbines correlate well with Rot3DC and are found to be within 10% error margin for the extreme yaws considered. The developed analytical formulation provides a simple model for quantification of turbine performance in yawed flow and can be used as an input to onboard feedback systems for yaw control.en
dc.description.notesSession 5A - Research and Development, and Technologyen
dc.format.extent22 pagesen
dc.format.mimetypeapplication/vnd.ms-powerpointen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRajagopalan, R. G., Guntupalli, K., Fischels, M. V., & Novak, L. A. (2015, June). An analytical procedure for evaluating aerodynamics of wind turbines in yawed flow. Paper presented at the North American Wind Energy Academy 2015 Symposium, Blacksburg, VA.en
dc.identifier.urihttp://hdl.handle.net/10919/54691en
dc.language.isoen_USen
dc.publisherVirginia Techen
dc.relation.ispartofNorth American Wind Energy Academy 2015 Symposiumen
dc.rightsIn Copyrighten
dc.rights.holderRajagopalan, R. Ganeshen
dc.rights.holderGuntupalli, Kanchanen
dc.rights.holderFischels, Mathew V.en
dc.rights.holderNovak, Luke A.en
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.titleAn Analytical Procedure for Evaluating Aerodynamics of Wind Turbines in Yawed Flowen
dc.typePresentationen
dc.type.dcmitypeTexten

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