YaBeSH Engineering and Technology Library

    • Journals
    • PaperQuest
    • YSE Standards
    • YaBeSH
    • Login
    View Item 
    •   YE&T Library
    • ASME
    • Journal of Turbomachinery
    • View Item
    •   YE&T Library
    • ASME
    • Journal of Turbomachinery
    • View Item
    • All Fields
    • Source Title
    • Year
    • Publisher
    • Title
    • Subject
    • Author
    • DOI
    • ISBN
    Advanced Search
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Archive

    Fan Stability Enhancement With Partial Casing Treatments

    Source: Journal of Turbomachinery:;2022:;volume( 144 ):;issue: 012::page 121010
    Author:
    Oldfield, Matthew K.;Castillo Pardo, Alejandro;Hall, Cesare A.
    DOI: 10.1115/1.4055386
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Casing treatments are used to extend the stability margin of fans or compressors. These typically have an axisymmetric arrangement, but for a fan exposed to nonaxisymmetric distortion, a casing treatment applied to a fraction of the annulus is of interest to target a particular distortion feature. In this paper, a partial casing treatment has been designed with axialskewed slots, and an experimental investigation has been carried out to determine the effects of the treatment extent and position. Three inlet conditions were tested for each extent of casing treatment: clean, radial tiplow distortion, and halfannulus tiplow distortion. For axisymmetric inlet conditions, the stall margin and efficiency penalty increased approximately linearly with casing treatment extent. However, for halfannulus tiplow distortion, there was a strong dependence between the position of the casing treatment relative to the distorted sector and the stall margin improvement. If the casing treatment is positioned where the rotor enters the distorted sector, unsteady disturbances in the rotor tip flow are minimized. However, if the rotor meets the casing treatment later in the distorted sector, the disturbances are able to grow, leading to earlier stall inception. Overall, this shows that partial casing treatments can target a distorted flow to give a disproportionately positive impact compared to a full annulus casing treatment. For example, it was found that a 72 deg casing treatment extent could be positioned to achieve over 50% of the full annulus casing treatment stall margin improvement with only 20% of the efficiency penalty.
    • Download: (1.570Mb)
    • Show Full MetaData Hide Full MetaData
    • Get RIS
    • Item Order
    • Go To Publisher
    • Price: 5000 Rial
    • Statistics

      Fan Stability Enhancement With Partial Casing Treatments

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4288962
    Collections
    • Journal of Turbomachinery

    Show full item record

    contributor authorOldfield, Matthew K.;Castillo Pardo, Alejandro;Hall, Cesare A.
    date accessioned2023-04-06T13:02:16Z
    date available2023-04-06T13:02:16Z
    date copyright9/19/2022 12:00:00 AM
    date issued2022
    identifier otherturbo_144_12_121010.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4288962
    description abstractCasing treatments are used to extend the stability margin of fans or compressors. These typically have an axisymmetric arrangement, but for a fan exposed to nonaxisymmetric distortion, a casing treatment applied to a fraction of the annulus is of interest to target a particular distortion feature. In this paper, a partial casing treatment has been designed with axialskewed slots, and an experimental investigation has been carried out to determine the effects of the treatment extent and position. Three inlet conditions were tested for each extent of casing treatment: clean, radial tiplow distortion, and halfannulus tiplow distortion. For axisymmetric inlet conditions, the stall margin and efficiency penalty increased approximately linearly with casing treatment extent. However, for halfannulus tiplow distortion, there was a strong dependence between the position of the casing treatment relative to the distorted sector and the stall margin improvement. If the casing treatment is positioned where the rotor enters the distorted sector, unsteady disturbances in the rotor tip flow are minimized. However, if the rotor meets the casing treatment later in the distorted sector, the disturbances are able to grow, leading to earlier stall inception. Overall, this shows that partial casing treatments can target a distorted flow to give a disproportionately positive impact compared to a full annulus casing treatment. For example, it was found that a 72 deg casing treatment extent could be positioned to achieve over 50% of the full annulus casing treatment stall margin improvement with only 20% of the efficiency penalty.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleFan Stability Enhancement With Partial Casing Treatments
    typeJournal Paper
    journal volume144
    journal issue12
    journal titleJournal of Turbomachinery
    identifier doi10.1115/1.4055386
    journal fristpage121010
    journal lastpage12101011
    page11
    treeJournal of Turbomachinery:;2022:;volume( 144 ):;issue: 012
    contenttypeFulltext
    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian
     
    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian