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    Experimental Study of Oblong Exhaust Ejectors With Multiring Oblong Entraining Diffusers

    Source: Journal of Engineering for Gas Turbines and Power:;2009:;volume( 131 ):;issue: 006::page 62302
    Author:
    Qi Chen
    ,
    A. M. Birk
    DOI: 10.1115/1.2943195
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: This paper presents experimental data for the performance of two oblong, straight, air-air ejectors with four-ring oblong entraining diffusers. The effects of inlet swirl angle, nozzle diameter, and flow temperature on the ejector pumping, backpressure, wall pressure distribution, diffuser pressure recovery, and surface film cooling effectiveness were studied. The experiments were carried out on a hot gas wind tunnel that could provide primary mass flow rates up to 2.2kg∕s at ambient temperature and 1.8kg∕s at 500°C. Velocity, pressure, and temperature were measured in the annulus upstream of the primary nozzle, on the mixing tube and diffuser walls, at the diffuser gap inlets, and at the diffuser exit. A comparison between the performance of the oblong ejector and a round ejector indicated that for a short length ejector, the oblong ejector provided better overall performance in terms of pumping and velocity and temperature distributions.
    keyword(s): Pressure , Flow (Dynamics) , Diffusers , Ejectors AND Nozzles ,
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      Experimental Study of Oblong Exhaust Ejectors With Multiring Oblong Entraining Diffusers

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    http://yetl.yabesh.ir/yetl1/handle/yetl/140386
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    • Journal of Engineering for Gas Turbines and Power

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    contributor authorQi Chen
    contributor authorA. M. Birk
    date accessioned2017-05-09T00:32:29Z
    date available2017-05-09T00:32:29Z
    date copyrightNovember, 2009
    date issued2009
    identifier issn1528-8919
    identifier otherJETPEZ-27086#062302_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/140386
    description abstractThis paper presents experimental data for the performance of two oblong, straight, air-air ejectors with four-ring oblong entraining diffusers. The effects of inlet swirl angle, nozzle diameter, and flow temperature on the ejector pumping, backpressure, wall pressure distribution, diffuser pressure recovery, and surface film cooling effectiveness were studied. The experiments were carried out on a hot gas wind tunnel that could provide primary mass flow rates up to 2.2kg∕s at ambient temperature and 1.8kg∕s at 500°C. Velocity, pressure, and temperature were measured in the annulus upstream of the primary nozzle, on the mixing tube and diffuser walls, at the diffuser gap inlets, and at the diffuser exit. A comparison between the performance of the oblong ejector and a round ejector indicated that for a short length ejector, the oblong ejector provided better overall performance in terms of pumping and velocity and temperature distributions.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleExperimental Study of Oblong Exhaust Ejectors With Multiring Oblong Entraining Diffusers
    typeJournal Paper
    journal volume131
    journal issue6
    journal titleJournal of Engineering for Gas Turbines and Power
    identifier doi10.1115/1.2943195
    journal fristpage62302
    identifier eissn0742-4795
    keywordsPressure
    keywordsFlow (Dynamics)
    keywordsDiffusers
    keywordsEjectors AND Nozzles
    treeJournal of Engineering for Gas Turbines and Power:;2009:;volume( 131 ):;issue: 006
    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
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