NDLI: Study of Losses in a Leakage Flow Through the Passage of Shrouded Turbine Blades With Swirl Velocity

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Xiao, Yumin Amano, R. S.
Copyright Year	2001
Abstract	In this paper the study of the flows over shrouded turbine blades with staggered-seals is presented by computing the three-dimensional Reynolds-Averaged Navier-Stokes (RANS) equations along with a compressible non-linear k-ε turbulence model. The swirl of the blade is coupled into the calculation. A multi-zone technique is used to generate the grids in the complex flow channel. The calculation results show that the leakage flow rate in the seal-channel is dominated by the pressure difference. It was also observed that the circumferential momentum transfer in the channel is very slow in the region in front of the seal tooth. The major effect of the rotating blade is the increase of local pressure distribution along the shrouded tip clearance path. However, the swirl motion of the blade tip does not significantly change the flow pattern in the axial-radial plane.
Sponsorship	International Gas Turbine Institute
File Format	PDF
ISBN	9780791878521
DOI	10.1115/2001-GT-0121
Volume Number	Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration
Conference Proceedings	ASME Turbo Expo 2001: Power for Land, Sea, and Air
Language	English
Publisher Date	2001-06-04
Publisher Place	New Orleans, Louisiana, USA
Access Restriction	Subscribed
Subject Keyword	Turbulence Turbine blades Blades Reynolds-averaged navier–stokes equations Rotating blades Clearances (engineering) Momentum Leakage flows Flow (dynamics) Pressure
Content Type	Text
Resource Type	Article

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