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

Mumic, Fadil LU ; Eriksson, Daniel LU and Sundén, Bengt LU (2004) ASME Turbo Expo 2004 Power for Land, Sea, and Air In Proceedings of ASME Turbo Expo 2004 Power for Land, Sea, and Air p.1521-1531
Abstract (Swedish)
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... (More)
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. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Viscous effects, Suction surfaces, Leakage flows, Blade-tip region
in
Proceedings of ASME Turbo Expo 2004 Power for Land, Sea, and Air
pages
1521 - 1531
conference name
ASME Turbo Expo 2004 Power for Land, Sea, and Air
external identifiers
  • Other:GT2004-53448
  • Scopus:10244270707
language
English
LU publication?
yes
id
315e8308-86d4-4315-8314-f73efe7b74b4 (old id 593936)
alternative location
http://store.asme.org/product.asp?catalog_name=Conference+Papers&category_name=&product_id=GT2004-53448
date added to LUP
2008-02-22 08:33:59
date last changed
2017-02-19 04:35:14
@inproceedings{315e8308-86d4-4315-8314-f73efe7b74b4,
  abstract     = {<b>Abstract in Undetermined</b><br/><br>
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.},
  author       = {Mumic, Fadil and Eriksson, Daniel and Sundén, Bengt},
  booktitle    = {Proceedings of ASME Turbo Expo 2004 Power for Land, Sea, and Air},
  keyword      = {Viscous effects,Suction surfaces,Leakage flows,Blade-tip region},
  language     = {eng},
  pages        = {1521--1531},
  title        = {On prediction of tip leakage flow and heat transfer in gas turbines},
  year         = {2004},
}