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    Theoretical and DSMC Studies on Heat Conduction of Gas Confined in a Cuboid Nanopore

    Source: Journal of Heat Transfer:;2017:;volume( 139 ):;issue: 005::page 52405
    Author:
    Zhu, Chuan-Yong
    ,
    Li, Zeng-Yao
    ,
    Tao, Wen-Quan
    DOI: 10.1115/1.4035854
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: This paper presents a theoretical and numerical study on the heat conduction of gas confined in a cuboid nanopore, in which there exists a temperature difference between the top and bottom walls and the side walls are adiabatic. A modified gas mean free path in confined space is proposed by considering the impact of collisions between molecules and solid surfaces, with which an effective thermal conductivity model of gas in the transition regime is derived. A direct simulation Monte Carlo (DSMC) study on the heat conduction of argon and helium in a cuboid nanopore is carried out to validate the present model. The influences of the Knudsen number and the treatments of boundary conditions on the heat conduction and effective thermal conductivity of gas in nanopores are studied. The temperature jumps and the reduction of heat flux near side walls are analyzed.
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      Theoretical and DSMC Studies on Heat Conduction of Gas Confined in a Cuboid Nanopore

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4234234
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    contributor authorZhu, Chuan-Yong
    contributor authorLi, Zeng-Yao
    contributor authorTao, Wen-Quan
    date accessioned2017-11-25T07:16:50Z
    date available2017-11-25T07:16:50Z
    date copyright2017/23/2
    date issued2017
    identifier issn0022-1481
    identifier otherht_139_05_052405.pdf
    identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4234234
    description abstractThis paper presents a theoretical and numerical study on the heat conduction of gas confined in a cuboid nanopore, in which there exists a temperature difference between the top and bottom walls and the side walls are adiabatic. A modified gas mean free path in confined space is proposed by considering the impact of collisions between molecules and solid surfaces, with which an effective thermal conductivity model of gas in the transition regime is derived. A direct simulation Monte Carlo (DSMC) study on the heat conduction of argon and helium in a cuboid nanopore is carried out to validate the present model. The influences of the Knudsen number and the treatments of boundary conditions on the heat conduction and effective thermal conductivity of gas in nanopores are studied. The temperature jumps and the reduction of heat flux near side walls are analyzed.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleTheoretical and DSMC Studies on Heat Conduction of Gas Confined in a Cuboid Nanopore
    typeJournal Paper
    journal volume139
    journal issue5
    journal titleJournal of Heat Transfer
    identifier doi10.1115/1.4035854
    journal fristpage52405
    journal lastpage052405-7
    treeJournal of Heat Transfer:;2017:;volume( 139 ):;issue: 005
    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
    yabeshDSpacePersian