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    The Effects of High Mainstream Turbulence and Turbine Vane Film Cooling on the Dispersion of a Simulated Hot Streak

    Source: Journal of Turbomachinery:;2004:;volume( 126 ):;issue: 001::page 203
    Author:
    Sean Jenkins
    ,
    Krishnakumar Varadarajan
    ,
    David G. Bogard
    DOI: 10.1115/1.1643911
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: This paper presents the combined effects of high turbulence and film cooling on the dispersion of a simulated hot streak as it passes over a scaled-up nozzle guide vane. Experimental data demonstrates a considerable decay in the strength of a hot streak due to turbulence effects alone. Film cooling further reduces the peak temperature values resulting in a reduction of the peak temperature in the hot streak on the order of 75% relative to the upstream peak temperature in the hot streak. Comparisons are made between high turbulence (Tu=20%) and moderate turbulence (Tu=3.5%) as well as between different blowing conditions for the suction side, showerhead, and pressure side film cooling holes on a simulated nozzle guide vane.
    keyword(s): Temperature , Cooling , Turbulence , Suction , Pressure , Turbines , Coolants AND Flow (Dynamics) ,
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      The Effects of High Mainstream Turbulence and Turbine Vane Film Cooling on the Dispersion of a Simulated Hot Streak

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/131019
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    contributor authorSean Jenkins
    contributor authorKrishnakumar Varadarajan
    contributor authorDavid G. Bogard
    date accessioned2017-05-09T00:14:43Z
    date available2017-05-09T00:14:43Z
    date copyrightJanuary, 2004
    date issued2004
    identifier issn0889-504X
    identifier otherJOTUEI-28708#203_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/131019
    description abstractThis paper presents the combined effects of high turbulence and film cooling on the dispersion of a simulated hot streak as it passes over a scaled-up nozzle guide vane. Experimental data demonstrates a considerable decay in the strength of a hot streak due to turbulence effects alone. Film cooling further reduces the peak temperature values resulting in a reduction of the peak temperature in the hot streak on the order of 75% relative to the upstream peak temperature in the hot streak. Comparisons are made between high turbulence (Tu=20%) and moderate turbulence (Tu=3.5%) as well as between different blowing conditions for the suction side, showerhead, and pressure side film cooling holes on a simulated nozzle guide vane.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleThe Effects of High Mainstream Turbulence and Turbine Vane Film Cooling on the Dispersion of a Simulated Hot Streak
    typeJournal Paper
    journal volume126
    journal issue1
    journal titleJournal of Turbomachinery
    identifier doi10.1115/1.1643911
    journal fristpage203
    journal lastpage211
    identifier eissn1528-8900
    keywordsTemperature
    keywordsCooling
    keywordsTurbulence
    keywordsSuction
    keywordsPressure
    keywordsTurbines
    keywordsCoolants AND Flow (Dynamics)
    treeJournal of Turbomachinery:;2004:;volume( 126 ):;issue: 001
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian