YaBeSH Engineering and Technology Library

    • Journals
    • PaperQuest
    • YSE Standards
    • YaBeSH
    • Login
    View Item 
    •   YE&T Library
    • ASME
    • Journal of Fluids Engineering
    • View Item
    •   YE&T Library
    • ASME
    • Journal of Fluids Engineering
    • 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

    Compressible Simulation of Flow and Sound Around a Small Axial-Flow Fan With Flow Through Casing Slits

    Source: Journal of Fluids Engineering:;2020:;volume( 142 ):;issue: 010::page 0101215-1
    Author:
    Yokoyama, Hiroshi
    ,
    Minowa, Katsutake
    ,
    Orito, Kohei
    ,
    Nishikawara, Masahito
    ,
    Yanada, Hideki
    DOI: 10.1115/1.4047807
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Small axial fans are used for cooling electronic equipment and are often installed in a casing with various slits. Direct aeroacoustic simulations and experiments were performed with different casing opening ratios to clarify the effects of the flow through the casing slits on the flow field and acoustic radiation around a small axial fan. Both the predicted and measured results show that aerodynamic performance deteriorates at and near the design flow rate and is higher at low flow rates by completely closing the casing slits compared with the fan in the casing with slits. The predicted flow field shows that the vortical structures in the tip vortices are spread by the suppression of flow through the slits at the design flow rate, leading to the intensification of turbulence in the blade wake. Moreover, the pressure fluctuations on the blade surface are intensified, which increases the aerodynamic sound pressure level. The suppression of the outflow of pressurized air through the downstream part of the slits enhances the aerodynamic performance at low flow rates. Also, the predicted surface streamline at the design flow rate shows that air flows along the blade tip for the fan with slits, whereas the flow toward the blade tip appears for the fan without slits. As a result, the pressure distributions on the blade and the torque exerted on the fan blade are affected by the opening ratio of slits.
    • Download: (2.219Mb)
    • Show Full MetaData Hide Full MetaData
    • Get RIS
    • Item Order
    • Go To Publisher
    • Price: 5000 Rial
    • Statistics

      Compressible Simulation of Flow and Sound Around a Small Axial-Flow Fan With Flow Through Casing Slits

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4274628
    Collections
    • Journal of Fluids Engineering

    Show full item record

    contributor authorYokoyama, Hiroshi
    contributor authorMinowa, Katsutake
    contributor authorOrito, Kohei
    contributor authorNishikawara, Masahito
    contributor authorYanada, Hideki
    date accessioned2022-02-04T21:58:23Z
    date available2022-02-04T21:58:23Z
    date copyright8/7/2020 12:00:00 AM
    date issued2020
    identifier issn0098-2202
    identifier otherfe_142_10_101402.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4274628
    description abstractSmall axial fans are used for cooling electronic equipment and are often installed in a casing with various slits. Direct aeroacoustic simulations and experiments were performed with different casing opening ratios to clarify the effects of the flow through the casing slits on the flow field and acoustic radiation around a small axial fan. Both the predicted and measured results show that aerodynamic performance deteriorates at and near the design flow rate and is higher at low flow rates by completely closing the casing slits compared with the fan in the casing with slits. The predicted flow field shows that the vortical structures in the tip vortices are spread by the suppression of flow through the slits at the design flow rate, leading to the intensification of turbulence in the blade wake. Moreover, the pressure fluctuations on the blade surface are intensified, which increases the aerodynamic sound pressure level. The suppression of the outflow of pressurized air through the downstream part of the slits enhances the aerodynamic performance at low flow rates. Also, the predicted surface streamline at the design flow rate shows that air flows along the blade tip for the fan with slits, whereas the flow toward the blade tip appears for the fan without slits. As a result, the pressure distributions on the blade and the torque exerted on the fan blade are affected by the opening ratio of slits.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleCompressible Simulation of Flow and Sound Around a Small Axial-Flow Fan With Flow Through Casing Slits
    typeJournal Paper
    journal volume142
    journal issue10
    journal titleJournal of Fluids Engineering
    identifier doi10.1115/1.4047807
    journal fristpage0101215-1
    journal lastpage0101215-10
    page10
    treeJournal of Fluids Engineering:;2020:;volume( 142 ):;issue: 010
    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