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    Optimization of Pin-Fin Heat Sinks in Bypass Flow Using Entropy Generation Minimization Method

    Source: Journal of Electronic Packaging:;2008:;volume( 130 ):;issue: 003::page 31010
    Author:
    W. A. Khan
    ,
    J. R. Culham
    ,
    M. M. Yovanovich
    DOI: 10.1115/1.2965209
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: An entropy generation minimization method is applied to study the thermodynamic losses caused by heat transfer and pressure drop for the fluid in a cylindrical pin-fin heat sink and bypass flow regions. A general expression for the entropy generation rate is obtained by considering control volumes around the heat sink and bypass regions. The conservation equations for mass and energy with the entropy balance are applied in both regions. Inside the heat sink, analytical/empirical correlations are used for heat transfer coefficients and friction factors, where the reference velocity used in the Reynolds number and the pressure drop is based on the minimum free area available for the fluid flow. In bypass regions theoretical models, based on laws of conservation of mass, momentum, and energy, are used to predict flow velocity and pressure drop. Both in-line and staggered arrangements are studied and their relative performance is compared to the same thermal and hydraulic conditions. A parametric study is also performed to show the effects of bypass on the overall performance of heat sinks.
    keyword(s): Flow (Dynamics) , Entropy , Optimization , Heat sinks , Pressure drop , Clearances (Engineering) AND Reynolds number ,
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      Optimization of Pin-Fin Heat Sinks in Bypass Flow Using Entropy Generation Minimization Method

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/137759
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    • Journal of Electronic Packaging

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    contributor authorW. A. Khan
    contributor authorJ. R. Culham
    contributor authorM. M. Yovanovich
    date accessioned2017-05-09T00:27:34Z
    date available2017-05-09T00:27:34Z
    date copyrightSeptember, 2008
    date issued2008
    identifier issn1528-9044
    identifier otherJEPAE4-26287#031010_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/137759
    description abstractAn entropy generation minimization method is applied to study the thermodynamic losses caused by heat transfer and pressure drop for the fluid in a cylindrical pin-fin heat sink and bypass flow regions. A general expression for the entropy generation rate is obtained by considering control volumes around the heat sink and bypass regions. The conservation equations for mass and energy with the entropy balance are applied in both regions. Inside the heat sink, analytical/empirical correlations are used for heat transfer coefficients and friction factors, where the reference velocity used in the Reynolds number and the pressure drop is based on the minimum free area available for the fluid flow. In bypass regions theoretical models, based on laws of conservation of mass, momentum, and energy, are used to predict flow velocity and pressure drop. Both in-line and staggered arrangements are studied and their relative performance is compared to the same thermal and hydraulic conditions. A parametric study is also performed to show the effects of bypass on the overall performance of heat sinks.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleOptimization of Pin-Fin Heat Sinks in Bypass Flow Using Entropy Generation Minimization Method
    typeJournal Paper
    journal volume130
    journal issue3
    journal titleJournal of Electronic Packaging
    identifier doi10.1115/1.2965209
    journal fristpage31010
    identifier eissn1043-7398
    keywordsFlow (Dynamics)
    keywordsEntropy
    keywordsOptimization
    keywordsHeat sinks
    keywordsPressure drop
    keywordsClearances (Engineering) AND Reynolds number
    treeJournal of Electronic Packaging:;2008:;volume( 130 ):;issue: 003
    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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