The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

On prediction of tip leakage flow and heat transfer in gas turbines

På svenska

Author

Summary, in English

Abstract in Undetermined
A numerical study has been performed to simulate the tip leakage flow and heat transfer on the first stage of a high-pressure turbine, which represents a modern gas turbine blade geometry. The low Re k-ω (SST) model is used to model the turbulence. Calculations are performed for both a flat and a squealer blade tip for three different tip gap clearances. The computations were carried out using a single blade with periodic conditions imposed along the boundaries in the circumferential (pitch) direction. The predicted tip heat transfer and static pressure distributions show reasonable agreement with experimental data. It was also observed that the tip clearance has a significant influence on local tip heat transfer coefficient distribution. The flat tip blade provides a higher overall heat transfer coefficient than the squealer tip blade.

Department/s

Publishing year

2004

Language

English

Pages

1521-1531

Publication/Series

Proceedings of ASME Turbo Expo 2004 Power for Land, Sea, and Air

Document type

Conference paper

Topic

  • Energy Engineering

Keywords

  • Viscous effects
  • Suction surfaces
  • Leakage flows
  • Blade-tip region

Conference name

ASME Turbo Expo 2004 Power for Land, Sea, and Air

Conference date

0001-01-02

Conference place

Vienna, Austria

Status

Published

Research group

  • heat transfer

ISBN/ISSN/Other

  • GT2004-53448