Heat transfer and film-cooling for the endwall of a first stage turbine vane

Karen Ann Thole, Daniel G. Knost

    Research output: Contribution to journalArticle

    59 Citations (Scopus)

    Abstract

    Secondary flows that result in turbomachines from inherent pressure gradients in airfoil passages, are the main contributors to aerodynamic losses and high heat transfer to the airfoil endwalls. The endwalls present a challenge to durability engineers in maintaining the integrity of the airfoils. One means of preventing degradation in the turbine is to film-cool components whereby coolant is extracted from the compressor and injected through small cooling holes in the airfoil surfaces. In addition to film-cooling, leakage flows from component interfaces, such as the combustor and turbine, can provide cooling in localized areas but also provide a change to the inlet boundary condition to the passage. This paper presents measurements relevant to the endwall region of a vane, which indicate the importance of considering the inlet flow condition.

    Original languageEnglish (US)
    Pages (from-to)5255-5269
    Number of pages15
    JournalInternational Journal of Heat and Mass Transfer
    Volume48
    Issue number25-26
    DOIs
    StatePublished - Dec 1 2005

    Fingerprint

    film cooling
    vanes
    airfoils
    turbines
    Airfoils
    Turbines
    heat transfer
    Heat transfer
    Cooling
    inlet flow
    cooling
    Inlet flow
    secondary flow
    Secondary flow
    coolants
    compressors
    combustion chambers
    Combustors
    Pressure gradient
    durability

    All Science Journal Classification (ASJC) codes

    • Condensed Matter Physics
    • Mechanical Engineering
    • Fluid Flow and Transfer Processes

    Cite this

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    Heat transfer and film-cooling for the endwall of a first stage turbine vane. / Thole, Karen Ann; Knost, Daniel G.

    In: International Journal of Heat and Mass Transfer, Vol. 48, No. 25-26, 01.12.2005, p. 5255-5269.

    Research output: Contribution to journalArticle

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