Aero-thermal performance of purge flow in turbinecascade endwall cooling

Wan Aizon Wan Ghopa, Ken ichi Funazaki

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

2 Citations (Scopus)

Abstract

The endwall and blade film cooling systems are the typical solution adopted within gas turbines to allow further increase of turbine inlet temperature, avoiding critical material thermal stresses. Due to complex secondary flow field in the blade passage, endwallis more difficult to cool than blade surfaces. In the matter of fact, in endwall film cooling studies, it is necessary to investigate the interaction between coolant air and the secondary flow. In present study, the flow field of high-pressure turbine cascade has been investigated by 5-holes pitot tube to reveal the secondary flows behavior under the influenced of purge flows while the heat transfer measurement was conducted bythermochromic liquid crystal (TLC). Experimental has significantly captured theaerodynamics effect of purge flowat blade downstream close to the endwall region. Furthermore, TLC measurement illustrated that the film cooling effectiveness and heat transfer coefficient contours were strongly influenced by the secondary flow on the endwall.

Original languageEnglish
Title of host publicationApplied Mechanics and Materials
Pages737-741
Number of pages5
Volume229-231
DOIs
Publication statusPublished - 2012
Event4th International Conference on Mechanical and Electrical Technology, ICMET 2012 - Kuala Lumpur
Duration: 24 Jul 201226 Jul 2012

Publication series

NameApplied Mechanics and Materials
Volume229-231
ISSN (Print)16609336
ISSN (Electronic)16627482

Other

Other4th International Conference on Mechanical and Electrical Technology, ICMET 2012
CityKuala Lumpur
Period24/7/1226/7/12

Fingerprint

Secondary flow
Cooling
Flow fields
Turbines
Strategic materials
Cascades (fluid mechanics)
Cooling systems
Thermal stress
Coolants
Liquid crystals
Heat transfer coefficients
Gas turbines
Heat transfer
Hot Temperature
Air
Temperature

Keywords

  • Endwall film cooling
  • Heat transfer
  • Purge flow
  • Secondary flow field
  • Upstream leakage

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Wan Ghopa, W. A., & Funazaki, K. I. (2012). Aero-thermal performance of purge flow in turbinecascade endwall cooling. In Applied Mechanics and Materials (Vol. 229-231, pp. 737-741). (Applied Mechanics and Materials; Vol. 229-231). https://doi.org/10.4028/www.scientific.net/AMM.229-231.737

Aero-thermal performance of purge flow in turbinecascade endwall cooling. / Wan Ghopa, Wan Aizon; Funazaki, Ken ichi.

Applied Mechanics and Materials. Vol. 229-231 2012. p. 737-741 (Applied Mechanics and Materials; Vol. 229-231).

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

Wan Ghopa, WA & Funazaki, KI 2012, Aero-thermal performance of purge flow in turbinecascade endwall cooling. in Applied Mechanics and Materials. vol. 229-231, Applied Mechanics and Materials, vol. 229-231, pp. 737-741, 4th International Conference on Mechanical and Electrical Technology, ICMET 2012, Kuala Lumpur, 24/7/12. https://doi.org/10.4028/www.scientific.net/AMM.229-231.737
Wan Ghopa WA, Funazaki KI. Aero-thermal performance of purge flow in turbinecascade endwall cooling. In Applied Mechanics and Materials. Vol. 229-231. 2012. p. 737-741. (Applied Mechanics and Materials). https://doi.org/10.4028/www.scientific.net/AMM.229-231.737
Wan Ghopa, Wan Aizon ; Funazaki, Ken ichi. / Aero-thermal performance of purge flow in turbinecascade endwall cooling. Applied Mechanics and Materials. Vol. 229-231 2012. pp. 737-741 (Applied Mechanics and Materials).
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