Vortex particle modelling of stall on rotors. Application to wind turbines

Voutsinas, SG; Riziotis, VA

dc.contributor.author	Voutsinas, SG	en
dc.contributor.author	Riziotis, VA	en
dc.date.accessioned	2014-03-01T01:44:57Z
dc.date.available	2014-03-01T01:44:57Z
dc.date.issued	1996	en
dc.identifier.issn	08888116	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/24529
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-5844240525&partnerID=40&md5=93e038d6c82257687502018a207ea1bb	en
dc.subject.other	Aerodynamics	en
dc.subject.other	Airfoils	en
dc.subject.other	Approximation theory	en
dc.subject.other	Mathematical models	en
dc.subject.other	Rotors	en
dc.subject.other	Turbomachine blades	en
dc.subject.other	Vibrations (mechanical)	en
dc.subject.other	Wakes	en
dc.subject.other	Wind turbines	en
dc.subject.other	Blade element theory	en
dc.subject.other	Stall	en
dc.subject.other	Yaw	en
dc.subject.other	Vortex flow	en
dc.title	Vortex particle modelling of stall on rotors. Application to wind turbines	en
heal.type	journalArticle	en
heal.publicationDate	1996	en
heal.abstract	Dynamic stall is of particular interest to rotor aerodynamics because of its connection to structural vibrations and control malfunctions. Due to inherent difficulties in most cases stall on rotors is approximated by simple models as those used within the context of blade element theory. However, their predictions are not always satisfactory and thus improvement is necessary. Since complete Navier-Stokes solvers are too expensive to afford, improvement is sought in between at an intermediate level. In the present work, a vortex model is proposed, based on the double wake concept corresponding to two vortex sheets originating from the trailing edge and the separation point respectively. Results on 2D steady stall, on dynamic stall of a pitching airfoil and finally of stall on a wind turbine rotor operating in yaw showed that the model reproduces the physics in a satisfactory way as compared with measurements.	en
heal.journalName	American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED	en
dc.identifier.volume	238	en
dc.identifier.spage	25	en
dc.identifier.epage	29	en