YaBeSH Engineering and Technology Library

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

    Computational Analysis of Pin-Fin Arrays Effects on Internal Heat Transfer Enhancement of a Blade Tip Wall

    Source: Journal of Heat Transfer:;2010:;volume( 132 ):;issue: 003::page 31901
    Author:
    Gongnan Xie
    ,
    Esa Utriainen
    ,
    Lieke Wang
    ,
    Bengt Sundén
    DOI: 10.1115/1.4000053
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Cooling methods are strongly needed for the turbine blade tips to ensure a long durability and safe operation. Improving the internal convective cooling is therefore required to increase the blade tip life. A common way to cool the tip is to use serpentine passages with 180-deg turns under the blade tip cap. In this paper, enhanced heat transfer of a blade tip cap has been investigated numerically. The computational models consist of a two-pass channel with a 180-deg turn and various arrays of pin fins mounted on the tip cap, and a smooth two-pass channel. The inlet Reynolds number is ranging from 100,000 to 600,000. The computations are 3D, steady, incompressible, and nonrotating. Details of the 3D fluid flow and heat transfer over the tip walls are presented. The effects of pin-fin height, diameter, and pitches on the heat transfer enhancement on the blade tip walls are observed. The overall performances of ten models are compared and evaluated. It is found that due to the combination of turning, impingement, and pin-fin crossflow, the heat transfer coefficient of the pin-finned tip is a factor of 2.67 higher than that of a smooth tip. This augmentation is achieved at the expense of a penalty of pressure drop around 30%. Results show that the intensity of heat transfer enhancement depends upon pin-fin configuration and arrangement. It is suggested that pin fins could be used to enhance the blade tip heat transfer and cooling.
    keyword(s): Heat transfer , Channels (Hydraulic engineering) , Blades , Fins , Pressure drop , Reynolds number , Cooling AND Temperature ,
    • Download: (1.749Mb)
    • Show Full MetaData Hide Full MetaData
    • Get RIS
    • Item Order
    • Go To Publisher
    • Price: 5000 Rial
    • Statistics

      Computational Analysis of Pin-Fin Arrays Effects on Internal Heat Transfer Enhancement of a Blade Tip Wall

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/143906
    Collections
    • Journal of Heat Transfer

    Show full item record

    contributor authorGongnan Xie
    contributor authorEsa Utriainen
    contributor authorLieke Wang
    contributor authorBengt Sundén
    date accessioned2017-05-09T00:39:04Z
    date available2017-05-09T00:39:04Z
    date copyrightMarch, 2010
    date issued2010
    identifier issn0022-1481
    identifier otherJHTRAO-27883#031901_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/143906
    description abstractCooling methods are strongly needed for the turbine blade tips to ensure a long durability and safe operation. Improving the internal convective cooling is therefore required to increase the blade tip life. A common way to cool the tip is to use serpentine passages with 180-deg turns under the blade tip cap. In this paper, enhanced heat transfer of a blade tip cap has been investigated numerically. The computational models consist of a two-pass channel with a 180-deg turn and various arrays of pin fins mounted on the tip cap, and a smooth two-pass channel. The inlet Reynolds number is ranging from 100,000 to 600,000. The computations are 3D, steady, incompressible, and nonrotating. Details of the 3D fluid flow and heat transfer over the tip walls are presented. The effects of pin-fin height, diameter, and pitches on the heat transfer enhancement on the blade tip walls are observed. The overall performances of ten models are compared and evaluated. It is found that due to the combination of turning, impingement, and pin-fin crossflow, the heat transfer coefficient of the pin-finned tip is a factor of 2.67 higher than that of a smooth tip. This augmentation is achieved at the expense of a penalty of pressure drop around 30%. Results show that the intensity of heat transfer enhancement depends upon pin-fin configuration and arrangement. It is suggested that pin fins could be used to enhance the blade tip heat transfer and cooling.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleComputational Analysis of Pin-Fin Arrays Effects on Internal Heat Transfer Enhancement of a Blade Tip Wall
    typeJournal Paper
    journal volume132
    journal issue3
    journal titleJournal of Heat Transfer
    identifier doi10.1115/1.4000053
    journal fristpage31901
    identifier eissn1528-8943
    keywordsHeat transfer
    keywordsChannels (Hydraulic engineering)
    keywordsBlades
    keywordsFins
    keywordsPressure drop
    keywordsReynolds number
    keywordsCooling AND Temperature
    treeJournal of Heat Transfer:;2010:;volume( 132 ):;issue: 003
    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