Webbläsaren som du använder stöds inte av denna webbplats. Alla versioner av Internet Explorer stöds inte längre, av oss eller Microsoft (läs mer här: * https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Var god och använd en modern webbläsare för att ta del av denna webbplats, som t.ex. nyaste versioner av Edge, Chrome, Firefox eller Safari osv.

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

In English

Författare

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.

Avdelning/ar

Publiceringsår

2004

Språk

Engelska

Sidor

1521-1531

Publikation/Tidskrift/Serie

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

Dokumenttyp

Konferensbidrag

Ämne

  • Energy Engineering

Nyckelord

  • 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

Forskningsgrupp

  • heat transfer

ISBN/ISSN/Övrigt

  • GT2004-53448