An axial flow turbine for a turbocharger is used as a test turbine, and the local heat transfer coefficient on the surface of the shroud is measured under uniform heat flux conditions. The nature of the tip clearance flow on the shroud surface and a flow pattern in the downstream region of the rotor blades are studied, and measurements are obtained by using a hot-wire anemometer in combination with a periodic multi-sampling and an ensemble averaging technique. Data are obtained under on- and off-design conditions. The effects of inlet flow angle, rotational speed and tip clearance on the local heat transfer coefficient are elucidated. The mean heat transfer coefficient is correlated with the tip clearance, and the mean velocity is calculated by the velocity triangle method for approximation. A leakage flow region exists in the downstream direction beyond the middle of the wall surface opposite the rotor blade, and a leakage vortex is recognized at the suction side near the trailing edge.
Skip Nav Destination
ASME 1992 International Gas Turbine and Aeroengine Congress and Exposition
June 1–4, 1992
Cologne, Germany
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-7896-5
PROCEEDINGS PAPER
Tip Clearance Effect on Heat Transfer and Leakage Flows on the Shroud-Wall Surface in an Axial Flow Turbine
Masaya Kumada,
Masaya Kumada
Gifu University, Yanagido, Gifu, Japan
Search for other works by this author on:
Satoshi Iwata,
Satoshi Iwata
Gifu University, Yanagido, Gifu, Japan
Search for other works by this author on:
Masakazu Obata,
Masakazu Obata
Ishikawajima-Harima Heavy Industries Co., Ltd., Toyosu, Tokyo, Japan
Search for other works by this author on:
Osamu Watanabe
Osamu Watanabe
Toyo Denki Co., Ltd., Ajiyoshi-cho, Kasugai-city, Aichi, Japan
Search for other works by this author on:
Masaya Kumada
Gifu University, Yanagido, Gifu, Japan
Satoshi Iwata
Gifu University, Yanagido, Gifu, Japan
Masakazu Obata
Ishikawajima-Harima Heavy Industries Co., Ltd., Toyosu, Tokyo, Japan
Osamu Watanabe
Toyo Denki Co., Ltd., Ajiyoshi-cho, Kasugai-city, Aichi, Japan
Paper No:
92-GT-200, V004T09A017; 7 pages
Published Online:
March 3, 2015
Citation
Kumada, M, Iwata, S, Obata, M, & Watanabe, O. "Tip Clearance Effect on Heat Transfer and Leakage Flows on the Shroud-Wall Surface in an Axial Flow Turbine." Proceedings of the ASME 1992 International Gas Turbine and Aeroengine Congress and Exposition. Volume 4: Heat Transfer; Electric Power; Industrial and Cogeneration. Cologne, Germany. June 1–4, 1992. V004T09A017. ASME. https://doi.org/10.1115/92-GT-200
Download citation file:
308
Views
0
Citations
Related Proceedings Papers
Related Articles
Tip Clearance Effect on Heat Transfer and Leakage Flows on the Shroud-Wall Surface in an Axial Flow Turbine
J. Turbomach (January,1994)
Aerothermal Investigations of Tip Leakage Flow in Axial Flow Turbines—Part II: Effect of Relative Casing Motion
J. Turbomach (January,2009)
Aerodynamics of Tip Leakage Flows Near Partial Squealer Rims in an Axial Flow Turbine Stage
J. Turbomach (January,2005)
Related Chapters
Aerodynamic Performance Analysis
Axial-Flow Compressors
Introduction
Turbine Aerodynamics: Axial-Flow and Radial-Flow Turbine Design and Analysis
Outlook
Closed-Cycle Gas Turbines: Operating Experience and Future Potential