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    Coupled Lattice Boltzmann and Meshless Simulation of Natural Convection in the Presence of Volumetric Radiation

    Source: Journal of Heat Transfer:;2015:;volume( 137 ):;issue: 011::page 111504
    Author:
    Luo, Kang
    ,
    Ai, Qing
    ,
    Yi, Hong
    ,
    Tan, He
    DOI: 10.1115/1.4030904
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: In this work, the coupled lattice Boltzmann and direct collocation meshless (LB–DCM) method is introduced to solve the natural convection in the presence of volumetric radiation in irregular geometries. LB–DCM is a hybrid approach based on a common multiscale Boltzmanntype model. Separate particle distribution functions with multirelaxation time (MRT) and lattice Bhatnagar–Gross–Krook (LBGK) models are used to calculate the flow field and the thermal field, respectively. The radiation transfer equation is computed using the meshless method with moving leastsquares (MLS) approximation. The LB–DCM code is first validated by the case of coupled convection–radiation flows in a square cavity. Comparisons show that this combined method is accurate and efficient. Then, the coupled convective and radiative heat transfer in two complex geometries are simulated at various parameters, such as eccentricity, Rayleigh number, and convection–radiation parameter. Numerical results show that the LB–DCM combination is a potential technique for the multifield coupling models, especially with the curved boundary.
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      Coupled Lattice Boltzmann and Meshless Simulation of Natural Convection in the Presence of Volumetric Radiation

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    http://yetl.yabesh.ir/yetl1/handle/yetl/158585
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    contributor authorLuo, Kang
    contributor authorAi, Qing
    contributor authorYi, Hong
    contributor authorTan, He
    date accessioned2017-05-09T01:20:00Z
    date available2017-05-09T01:20:00Z
    date issued2015
    identifier issn0022-1481
    identifier otherht_137_11_111504.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/158585
    description abstractIn this work, the coupled lattice Boltzmann and direct collocation meshless (LB–DCM) method is introduced to solve the natural convection in the presence of volumetric radiation in irregular geometries. LB–DCM is a hybrid approach based on a common multiscale Boltzmanntype model. Separate particle distribution functions with multirelaxation time (MRT) and lattice Bhatnagar–Gross–Krook (LBGK) models are used to calculate the flow field and the thermal field, respectively. The radiation transfer equation is computed using the meshless method with moving leastsquares (MLS) approximation. The LB–DCM code is first validated by the case of coupled convection–radiation flows in a square cavity. Comparisons show that this combined method is accurate and efficient. Then, the coupled convective and radiative heat transfer in two complex geometries are simulated at various parameters, such as eccentricity, Rayleigh number, and convection–radiation parameter. Numerical results show that the LB–DCM combination is a potential technique for the multifield coupling models, especially with the curved boundary.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleCoupled Lattice Boltzmann and Meshless Simulation of Natural Convection in the Presence of Volumetric Radiation
    typeJournal Paper
    journal volume137
    journal issue11
    journal titleJournal of Heat Transfer
    identifier doi10.1115/1.4030904
    journal fristpage111504
    journal lastpage111504
    identifier eissn1528-8943
    treeJournal of Heat Transfer:;2015:;volume( 137 ):;issue: 011
    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