3-D axisymmetric viscous internal flows on rotating and stationary surfaces in turbomachines

Ktenidis, PD; Kaldellis, JK

dc.contributor.author	Ktenidis, PD	en
dc.contributor.author	Kaldellis, JK	en
dc.date.accessioned	2014-03-01T02:47:59Z
dc.date.available	2014-03-01T02:47:59Z
dc.date.issued	1991	en
dc.identifier.issn	04021215	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/33491
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0025867496&partnerID=40&md5=a3fac2f8b179df8eb48f72109b684068	en
dc.subject.other	Compressors - Axial Flow	en
dc.subject.other	Flow of Fluids - Viscous	en
dc.subject.other	Gas Turbines - Flow Problems	en
dc.subject.other	Axisymmetric Viscous Internal Flows	en
dc.subject.other	High Bypass Turbine Engines	en
dc.subject.other	Navier-Stokes Equations	en
dc.subject.other	Turbomachine Stationary Surfaces	en
dc.subject.other	Turbomachinery Rotating Surfaces	en
dc.subject.other	Turbomachinery	en
dc.title	3-D axisymmetric viscous internal flows on rotating and stationary surfaces in turbomachines	en
heal.type	conferenceItem	en
heal.publicationDate	1991	en
heal.abstract	A fast calculation method, able to predict three dimensional axisymmetric viscous internal flows on rotating and stationary surfaces in turbomachinery components has been developed. Modern high bypass turbine engines are characterized by axisymmetric parts such as inlets, nacelles, the prediffuser whose primary function is the efficient transfer of flow from one component to another. The flow field in such ducts are characterized by streamline curvature and divergence resulting from sharp contour and rapid area rotations, with the appearance of high peripheral velocity components. The detailed calculation of the flow field through the axisymmetric parts requires a solution of the three-dimensional Navier - Stokes equations. However, conventional design systems simplify the flow pattern to a two dimensional one. The proposed method is based on the two-zone model and uses the notions of the integral formulation for the meridional direction. The meridional vorticity transport differential formulation, in a modified form is used for the peripheral direction to include the dynamics of passing from stationary to rotating parts and vice-versa. The resulting algorithms are sufficiently versatile and reliable to be used as a part of a design system for industrial applications.	en
heal.publisher	Publ by ASME, New York, NY, United States	en
heal.journalName	American Society of Mechanical Engineers (Paper)	en