HOT-WIRE MEASUREMENTS IN THE WAKE OF A DARRIEUS ROTOR.

Michos, A; Bergeles, G; Athanassiadis, N

dc.contributor.author	Michos, A	en
dc.contributor.author	Bergeles, G	en
dc.contributor.author	Athanassiadis, N	en
dc.date.accessioned	2014-03-01T02:47:37Z
dc.date.available	2014-03-01T02:47:37Z
dc.date.issued	1985	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/33289
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0022235145&partnerID=40&md5=b3e87024d91222594aaa3d37e510a40a	en
dc.subject.other	AERODYNAMICS - Wakes	en
dc.subject.other	MODELS - Testing	en
dc.subject.other	TURBOMACHINERY - Rotors	en
dc.subject.other	WIND TUNNELS	en
dc.subject.other	DARRIEUS WIND TURBINES	en
dc.subject.other	HOT-WIRE MEASUREMENTS	en
dc.subject.other	TURBULENCE INTENSITY	en
dc.subject.other	VELOCITY DEFECT	en
dc.subject.other	WIND TURBINES	en
dc.title	HOT-WIRE MEASUREMENTS IN THE WAKE OF A DARRIEUS ROTOR.	en
heal.type	conferenceItem	en
heal.publicationDate	1985	en
heal.abstract	The paper presents wind-tunnel flow field measurements of a two-bladed 1,64m diameter Darrieus rotor model with a solidity ratio of 0. 16. Velocity and turbulence intensity measurements were made at the rotor symmetry plane using a straight hot wire in a region extending one rotor diameter upstream to three rotor diameters downstream of the rotor at three velocity ratios and at a blade Reynolds number of 150000. The results show that the flow in the wake is strongly retarded compared to a very little disturbed flow just upstream of the rotor. The velocity defect increases with increasing velocity ratio. At low velocity ratios the velocity profile is highly nonsymmetric, whilst turbulence intensity is high due to blade stalling. At high velocity ratios the velocity distribution becomes more symmetric with low levels of turbulence.	en
heal.publisher	H. S. Stephens & Associates, Bedford, Engl	en
heal.journalName	Commission of the European Communities, (Report) EUR	en
dc.identifier.spage	517	en
dc.identifier.epage	522	en