Adaptation of a 3-D pressure correction navier-stokes solver for the accurate modelling of tip clearance flows

Giannakoglou, K; Lymberopoulos, N; Tourlidakis, A; Nikolaou, I; Elder, RL; Papailiou, KD

dc.contributor.author	Giannakoglou, K	en
dc.contributor.author	Lymberopoulos, N	en
dc.contributor.author	Tourlidakis, A	en
dc.contributor.author	Nikolaou, I	en
dc.contributor.author	Elder, RL	en
dc.contributor.author	Papailiou, KD	en
dc.date.accessioned	2014-03-01T01:41:12Z
dc.date.available	2014-03-01T01:41:12Z
dc.date.issued	1992	en
dc.identifier.issn	03736601	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/23416
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0026968687&partnerID=40&md5=7def3365307b2e3938e90a959f650a36	en
dc.subject.other	Airfoils	en
dc.subject.other	Cascades (fluid mechanics)	en
dc.subject.other	Turbomachinery	en
dc.subject.other	Flow leakage	en
dc.subject.other	Linear cascades	en
dc.subject.other	Tip clearance	en
dc.subject.other	Turbomachine blades	en
dc.title	Adaptation of a 3-D pressure correction navier-stokes solver for the accurate modelling of tip clearance flows	en
heal.type	journalArticle	en
heal.publicationDate	1992	en
heal.abstract	The flow leakage through the tip clearance of turbomachines is proved to be detrimental to their efficiency and range of operation. Three-dimensional Navier-Stokes solvers are often used in an attempt to reproduce numerically the complex flow patterns in the tip-clearance region. Particular emphasis is put on the accurate representation of geometrical details, the mesh and the turbulence models to be implemented. In the present paper, a 3-D Navier-Stokes solver is suitably adapted so that the flat tip surface of a blade and its sharp edges could be accurately modelled, in order to improve the precision of the calculation in the tip region. The adapted code solves the fully elliptic, steady, Navier-Stokes equations through a space-marching algorithm and a pressure correction technique; the H-type topology is retained, even in cases with thick leading edges. The analysis is applied to two different cases, a linear cascade and a spinning rotor, and comparisons are provided.	en
heal.journalName	RFM, Revue Francaise de Mecanique	en
dc.identifier.issue	3	en
dc.identifier.spage	247	en
dc.identifier.epage	255	en