Experimental investigation of louver cooling scheme on gas turbine vane suction side

T. Elnady, O. Hassan, I. Hassan, L. Kadem, T. Lucas

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

Abstract

An experimental investigation has been performed tomeasure the film cooling performance of louver scheme over ascaled vane of high-pressure gas turbine using a twodimensionalcascade. Two rows of axially oriented louverscheme are used to cool the suction side and their performanceis compared with two similar rows of standard cylindricalholes. The effect of hole location on the cooling performanceis investigated for each row individually, then the rowinteraction is investigated for both rows at four differentblowing ratios ranging from 1 to 2 with a 0.9 density ratio.The exit Reynolds number based on the true chord is 1.5E5and exit Mach number is 0.23. The temperature distribution onthe vane is mapped using a transient Thermochromic LiquidCrystal (TLC) technique to obtain the local distributions of theheat transfer coefficient and film cooling effectiveness. Thelouver scheme shows a superior cooling effectiveness thanthat of the cylindrical holes at all blowing ratios in terms ofprotection and lateral coverage. The row location highlyaffects the cooling performance for both the louver andcylindrical scheme.

Original languageEnglish
Title of host publicationASME 2011 Turbo Expo
Subtitle of host publicationTurbine Technical Conference and Exposition, GT2011
Pages315-323
Number of pages9
EditionPARTS A AND B
DOIs
Publication statusPublished - 1 Dec 2011
Externally publishedYes
EventASME 2011 Turbo Expo: Turbine Technical Conference and Exposition, GT2011 - Vancouver, BC, Canada
Duration: 6 Jun 201110 Jun 2011

Publication series

NameProceedings of the ASME Turbo Expo
NumberPARTS A AND B
Volume5

Other

OtherASME 2011 Turbo Expo: Turbine Technical Conference and Exposition, GT2011
CountryCanada
CityVancouver, BC
Period6/6/1110/6/11

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Elnady, T., Hassan, O., Hassan, I., Kadem, L., & Lucas, T. (2011). Experimental investigation of louver cooling scheme on gas turbine vane suction side. In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition, GT2011 (PARTS A AND B ed., pp. 315-323). (Proceedings of the ASME Turbo Expo; Vol. 5, No. PARTS A AND B). https://doi.org/10.1115/GT2011-45585