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    Incompressible Laminar Developing Flow in Microchannels

    Source: Journal of Fluids Engineering:;2012:;volume( 134 ):;issue: 001::page 14503
    Author:
    E. Galvis
    ,
    S. Yarusevych
    ,
    J. R. Culham
    DOI: 10.1115/1.4005736
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: In many engineering systems, such as compact heat exchangers and microcoolers used in electronics packaging, system performance depends on laminar flow development in microchannels. This study investigates effects of Reynolds number, hydraulic diameter, and channel aspect ratio on the entrance length in rectangular microchannels. Numerical investigations were performed for microchannels with hydraulic diameters between 100 and 500 μm, Reynolds numbers between 0.5 and 200, and channel aspect ratios between 1 and 5. The results show good agreement with available experimental data and are used to formulate new correlations for estimating the entrance length in microchannels. Compared to other correlations, these new correlations are shown to provide more accurate estimates of entrance length over a wider range of Reynolds numbers representative of practical flows in microchannels.
    keyword(s): Flow (Dynamics) , Channels (Hydraulic engineering) , Reynolds number , Microchannels AND Laminar flow ,
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      Incompressible Laminar Developing Flow in Microchannels

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    http://yetl.yabesh.ir/yetl1/handle/yetl/149202
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    contributor authorE. Galvis
    contributor authorS. Yarusevych
    contributor authorJ. R. Culham
    date accessioned2017-05-09T00:51:35Z
    date available2017-05-09T00:51:35Z
    date copyrightJanuary, 2012
    date issued2012
    identifier issn0098-2202
    identifier otherJFEGA4-27513#014503_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/149202
    description abstractIn many engineering systems, such as compact heat exchangers and microcoolers used in electronics packaging, system performance depends on laminar flow development in microchannels. This study investigates effects of Reynolds number, hydraulic diameter, and channel aspect ratio on the entrance length in rectangular microchannels. Numerical investigations were performed for microchannels with hydraulic diameters between 100 and 500 μm, Reynolds numbers between 0.5 and 200, and channel aspect ratios between 1 and 5. The results show good agreement with available experimental data and are used to formulate new correlations for estimating the entrance length in microchannels. Compared to other correlations, these new correlations are shown to provide more accurate estimates of entrance length over a wider range of Reynolds numbers representative of practical flows in microchannels.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleIncompressible Laminar Developing Flow in Microchannels
    typeJournal Paper
    journal volume134
    journal issue1
    journal titleJournal of Fluids Engineering
    identifier doi10.1115/1.4005736
    journal fristpage14503
    identifier eissn1528-901X
    keywordsFlow (Dynamics)
    keywordsChannels (Hydraulic engineering)
    keywordsReynolds number
    keywordsMicrochannels AND Laminar flow
    treeJournal of Fluids Engineering:;2012:;volume( 134 ):;issue: 001
    contenttypeFulltext
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