Leakage effects in the rotor tip-clearance region of a multistage axial compressor, Part 2: Numerical modelling

Politis, ES; Giannakoglou, KC; Papailiou, KD

dc.contributor.author	Politis, ES	en
dc.contributor.author	Giannakoglou, KC	en
dc.contributor.author	Papailiou, KD	en
dc.date.accessioned	2014-03-01T02:48:41Z
dc.date.available	2014-03-01T02:48:41Z
dc.date.issued	1998	en
dc.identifier.issn	04021215	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/34009
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0031674448&partnerID=40&md5=5f3f6196fabe603f899cc3232572924d	en
dc.subject.other	Computer simulation	en
dc.subject.other	Flow patterns	en
dc.subject.other	Iterative methods	en
dc.subject.other	Mathematical models	en
dc.subject.other	Navier Stokes equations	en
dc.subject.other	Rotors	en
dc.subject.other	Leakage effects	en
dc.subject.other	Compressors	en
dc.title	Leakage effects in the rotor tip-clearance region of a multistage axial compressor, Part 2: Numerical modelling	en
heal.type	conferenceItem	en
heal.publicationDate	1998	en
heal.abstract	Innovative measurements of tip-clearance flow for the 3rd stage rotor embedded in a four stage Low-Speed Research Compressor are presented in the companion ASME paper. Here, in Part 2, the rotor flow is numerically simulated through a Navier-Stokes solver implementing the k-ε turbulence model. The 3rd stage rows are considered as discrete parts of the same computational domain and the flow in each one of them is treated as steady in the corresponding system of reference. An iterative, though loose, coupling between the rotor exit and the stator inlet is established by artificially increasing the inter-row distance. To model tip-clearance flow effects with sufficient accuracy, a two-block grid system per row is used. Comparisons with measurements published in Part 1 for the average flow quantities at the exit both rows are presented. Flow patterns close to the rotor tip-clearance region are illustrated.	en
heal.publisher	ASME, Fairfield, NJ, United States	en
heal.journalName	American Society of Mechanical Engineers (Paper)	en
dc.identifier.issue	GT	en