Unsteady flowfield and torque predictions during the rotation of the guidevanes of hydraulic turbine

Papantonis, DE; Pothou, KP

dc.contributor.author	Papantonis, DE	en
dc.contributor.author	Pothou, KP	en
dc.date.accessioned	2014-03-01T01:11:34Z
dc.date.available	2014-03-01T01:11:34Z
dc.date.issued	1995	en
dc.identifier.issn	0098-2202	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11713
dc.subject.classification	Engineering, Mechanical	en
dc.subject.other	Boundary element method	en
dc.subject.other	Boundary layers	en
dc.subject.other	Cascades (fluid mechanics)	en
dc.subject.other	Estimation	en
dc.subject.other	Flow interactions	en
dc.subject.other	Numerical methods	en
dc.subject.other	Rotation	en
dc.subject.other	Torque	en
dc.subject.other	Unsteady flow	en
dc.subject.other	Vortex flow	en
dc.subject.other	Grid-dependent procedures	en
dc.subject.other	Guidevanes	en
dc.subject.other	Numerical prediction	en
dc.subject.other	Unsteady flowfield	en
dc.subject.other	Viscous-inviscid interaction	en
dc.subject.other	Vortex particle method	en
dc.subject.other	Hydraulic turbines	en
dc.title	Unsteady flowfield and torque predictions during the rotation of the guidevanes of hydraulic turbine	en
heal.type	journalArticle	en
heal.identifier.primary	10.1115/1.2817285	en
heal.identifier.secondary	http://dx.doi.org/10.1115/1.2817285	en
heal.language	English	en
heal.publicationDate	1995	en
heal.abstract	In the present work, the numerical prediction of the steady as well as of the unsteady flow field through the cascade of guidevanes of a reaction turbine is examined. The unsteadiness of the flow results from the rotation of the guidevanes around their pivot. The applied numerical procedure is based on the coupling of the boundary element and the vortex particle method and is supplemented by two different procedures for the evaluation of the viscous-inviscid interaction and the boundary layers developed on the vanes. The cinematic conditions at every point of the flowfield are calculated first; however, special attention is paid to the prediction of the torque acting on the cascade and, namely, the variation of the torque during the rotation of the guidevanes, as compared with the torque corresponding to the steady state.	en
heal.publisher	ASME, New York, NY, United States	en
heal.journalName	Journal of Fluids Engineering, Transactions of the ASME	en
dc.identifier.doi	10.1115/1.2817285	en
dc.identifier.isi	ISI:A1995TT08400021	en
dc.identifier.volume	117	en
dc.identifier.issue	3	en
dc.identifier.spage	468	en
dc.identifier.epage	472	en