Aerodynamics performance of endwall film cooling under the influence of purge flow in high pressure turbine cascade

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Modern gas turbine requires sophisticated cooling technologies to avoid thermal failure due to the extreme operating environment. Film cooling is one of the most important cooling technologies used for gas turbine hot-section components, particularly for blade aerofoil surfaces and endwall. Previous research has shown that the endwall region is considerably more difficult to cool than the blade aerofoil surfaces because of the existence of complex secondary flow structures such as horse-shoe vortex, cross flow and passage vortex in the blade passage. Therefore, this study focuses on aerodynamics interaction of the cooling air through the upstream slot with the secondary flow field. Experiments carried out using 5-holes Pitot tube have revealed the secondary flow field at blade downstream of linear cascade of high pressure turbine. A baseline condition without any leakage flows was compared with the leakage ejection case. Finally, both cases were validated by simulations from commercial software, ANSYS CFX.

Original languageEnglish
Title of host publicationApplied Mechanics and Materials
PublisherTrans Tech Publications Ltd
Pages119-124
Number of pages6
Volume629
ISBN (Print)9783038352327, 9783038352327
DOIs
Publication statusPublished - 2014
Event5th AEROTECH conference - Kuala Lumpur
Duration: 29 Oct 201430 Oct 2014

Publication series

NameApplied Mechanics and Materials
Volume629
ISSN (Print)16609336
ISSN (Electronic)16627482

Other

Other5th AEROTECH conference
CityKuala Lumpur
Period29/10/1430/10/14

Fingerprint

Cascades (fluid mechanics)
Secondary flow
Aerodynamics
Turbines
Cooling
Airfoils
Turbomachine blades
Gas turbines
Flow fields
Vortex flow
Flow structure
Air
Experiments

Keywords

  • Endwall cooling
  • Passage vortex
  • Purge flow
  • Secondary flow field
  • Upstream leakage

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Wan Ghopa, W. A., Funazaki, K. I., & Abu Mansor, M. R. (2014). Aerodynamics performance of endwall film cooling under the influence of purge flow in high pressure turbine cascade. In Applied Mechanics and Materials (Vol. 629, pp. 119-124). (Applied Mechanics and Materials; Vol. 629). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/AMM.629.119

Aerodynamics performance of endwall film cooling under the influence of purge flow in high pressure turbine cascade. / Wan Ghopa, Wan Aizon; Funazaki, Ken Ichi; Abu Mansor, Mohd Radzi.

Applied Mechanics and Materials. Vol. 629 Trans Tech Publications Ltd, 2014. p. 119-124 (Applied Mechanics and Materials; Vol. 629).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Wan Ghopa, WA, Funazaki, KI & Abu Mansor, MR 2014, Aerodynamics performance of endwall film cooling under the influence of purge flow in high pressure turbine cascade. in Applied Mechanics and Materials. vol. 629, Applied Mechanics and Materials, vol. 629, Trans Tech Publications Ltd, pp. 119-124, 5th AEROTECH conference, Kuala Lumpur, 29/10/14. https://doi.org/10.4028/www.scientific.net/AMM.629.119
Wan Ghopa WA, Funazaki KI, Abu Mansor MR. Aerodynamics performance of endwall film cooling under the influence of purge flow in high pressure turbine cascade. In Applied Mechanics and Materials. Vol. 629. Trans Tech Publications Ltd. 2014. p. 119-124. (Applied Mechanics and Materials). https://doi.org/10.4028/www.scientific.net/AMM.629.119
Wan Ghopa, Wan Aizon ; Funazaki, Ken Ichi ; Abu Mansor, Mohd Radzi. / Aerodynamics performance of endwall film cooling under the influence of purge flow in high pressure turbine cascade. Applied Mechanics and Materials. Vol. 629 Trans Tech Publications Ltd, 2014. pp. 119-124 (Applied Mechanics and Materials).
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