Investigation of sand blocking within impingement and film-cooling holes

N. D. Cardwell, Karen Ann Thole, S. W. Burd

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

    1 Citation (Scopus)

    Abstract

    Gas turbines are not generally designed for operation with a particle laden inlet flow but, in fact, are commonly operated in unclean environments resulting in dirt, sand, and other debris ingestion. In addition to the negative effects within the main gas path, for aeroengines these particles are pulled into the coolant system where they can clog cooling passages and erode internal surfaces. Unlike previous research that focused on deposition and erosion within the main gas path, this study evaluated blocking in a double wall liner whereby both impingement and film-cooling holes were simulated. Double wall liners are commonly used in the combustor and turbine for combined internal and external cooling of metal components. Specifically, sand blockages were evaluated through comparisons of measured flowrates for a particular pressure ratio across the liner. Four liner geometries were tested whereby the coolant hole size and orientation were varied in test coupons. At ambient temperature, blocking was shown to be a function of the impingement flow area. A significant rise in blocking was observed as sand and metal temperatures were increased. The overlap between the impingement and film-cooling holes was also found to have a significant effect.

    Original languageEnglish (US)
    Title of host publication2008 Proceedings of the ASME Turbo Expo
    Subtitle of host publicationPower for Land, Sea, and Air
    Pages1147-1159
    Number of pages13
    Volume4
    EditionPART B
    DOIs
    StatePublished - Dec 1 2008
    Event2008 ASME Turbo Expo - Berlin, Germany
    Duration: Jun 9 2008Jun 13 2008

    Other

    Other2008 ASME Turbo Expo
    CountryGermany
    CityBerlin
    Period6/9/086/13/08

    Fingerprint

    Sand
    Cooling
    Coolants
    Inlet flow
    Combustors
    Metals
    Gases
    Debris
    Gas turbines
    Erosion
    Turbines
    Temperature
    Geometry

    All Science Journal Classification (ASJC) codes

    • Engineering(all)

    Cite this

    Cardwell, N. D., Thole, K. A., & Burd, S. W. (2008). Investigation of sand blocking within impingement and film-cooling holes. In 2008 Proceedings of the ASME Turbo Expo: Power for Land, Sea, and Air (PART B ed., Vol. 4, pp. 1147-1159) https://doi.org/10.1115/GT2008-51351
    Cardwell, N. D. ; Thole, Karen Ann ; Burd, S. W. / Investigation of sand blocking within impingement and film-cooling holes. 2008 Proceedings of the ASME Turbo Expo: Power for Land, Sea, and Air. Vol. 4 PART B. ed. 2008. pp. 1147-1159
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    Cardwell, ND, Thole, KA & Burd, SW 2008, Investigation of sand blocking within impingement and film-cooling holes. in 2008 Proceedings of the ASME Turbo Expo: Power for Land, Sea, and Air. PART B edn, vol. 4, pp. 1147-1159, 2008 ASME Turbo Expo, Berlin, Germany, 6/9/08. https://doi.org/10.1115/GT2008-51351

    Investigation of sand blocking within impingement and film-cooling holes. / Cardwell, N. D.; Thole, Karen Ann; Burd, S. W.

    2008 Proceedings of the ASME Turbo Expo: Power for Land, Sea, and Air. Vol. 4 PART B. ed. 2008. p. 1147-1159.

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

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    Cardwell ND, Thole KA, Burd SW. Investigation of sand blocking within impingement and film-cooling holes. In 2008 Proceedings of the ASME Turbo Expo: Power for Land, Sea, and Air. PART B ed. Vol. 4. 2008. p. 1147-1159 https://doi.org/10.1115/GT2008-51351