Effect of tip clearance gap size and wall rotation on the performance of a high-speed annular compressor cascade

Doukelis, A; Mathioudakis, K; Papailiou, K

dc.contributor.author	Doukelis, A	en
dc.contributor.author	Mathioudakis, K	en
dc.contributor.author	Papailiou, K	en
dc.date.accessioned	2014-03-01T02:48:40Z
dc.date.available	2014-03-01T02:48:40Z
dc.date.issued	1998	en
dc.identifier.issn	04021215	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/34001
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0031703023&partnerID=40&md5=3b19f66af96157bf1f3419933538317d	en
dc.subject.other	Cascades (fluid mechanics)	en
dc.subject.other	Pressure effects	en
dc.subject.other	Turbomachine blades	en
dc.subject.other	Wall flow	en
dc.subject.other	High speed annular compressor cascade	en
dc.subject.other	Tip clearance gap size	en
dc.subject.other	Wall rotation	en
dc.subject.other	Compressors	en
dc.title	Effect of tip clearance gap size and wall rotation on the performance of a high-speed annular compressor cascade	en
heal.type	conferenceItem	en
heal.publicationDate	1998	en
heal.abstract	The performance of a high speed annular compressor cascade for different clearance gap sizes, with stationary or rotating hub wall is investigated. Five hole probe measurements, conducted at the inlet and outlet of the cascade, are used to derive blade performance characteristics, in the form of loss and turning distributions. Characteristics are presented in the form of circumferentially mass averaged profiles, while distributions on the exit plane provide information useful to interpret the performance of the blading. Static pressure distributions on the surface of the blades as well as inside the tip clearance gap have also been measured. A set of four clearance gap sizes, in addition to zero clearance data for the stationary wall, gives the possibility to observe the dependence of performance characteristics on clearance size, and establish the influence of rotating the hub. Overall performance is related to features of the tip clearance flow. Increasing the clearance size is found to increase losses in the clearance region, while it affects the flow in the entire passage. Wall rotation is found to improve the performance of the cascade.	en
heal.publisher	ASME, Fairfield, NJ, United States	en
heal.journalName	American Society of Mechanical Engineers (Paper)	en
dc.identifier.issue	GT	en