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    Multiple-Relaxation-Time Lattice Boltzmann Simulation of Flow and Heat Transfer in Porous Volumetric Solar Receivers

    Source: Journal of Energy Resources Technology:;2018:;volume 140:;issue 008::page 82003
    Author:
    Zhao, Wandong
    ,
    Zhang, Ying
    ,
    Xu, Ben
    ,
    Li, Peisheng
    ,
    Wang, Zhaotai
    ,
    Jiang, Shuisheng
    DOI: 10.1115/1.4039775
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: The flow and heat transfer (FHT) in porous volumetric solar receiver was investigated through a double-distributed thermally coupled multiple-relaxation-time (MRT) lattice Boltzmann model (LBM) in this study. The MRT-LBM model was first verified by simulating the FHT in Sierpinski carpet fractal porous media and compared with the results from computational fluid dynamics (CFD). Three typical porous structures in volumetric solar receivers were developed and constructed, and then the FHT in these three porous structures were investigated using the MRT-LBM model. The effects of pore structure, Reynolds (Re) number based on air velocity at inlet, the porosity, and the thermal diffusivity of solid matrix were discussed. It was found that type-III pore structure among the three typical porous structures has the best heat transfer performance because of its lowest maximum temperature of solid particles at the inlet and the highest average temperature of air at the outlet, under the same porosity and heat flux density. Furthermore, increasing the thermal diffusivity of solid particles will lead to higher averaged air temperature at the outlet. It is hoped that the simulation results will be beneficial to the solar thermal community when designing the solar receivers in concentrated solar power (CSP) applications.
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      Multiple-Relaxation-Time Lattice Boltzmann Simulation of Flow and Heat Transfer in Porous Volumetric Solar Receivers

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4251027
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    • Journal of Energy Resources Technology

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    contributor authorZhao, Wandong
    contributor authorZhang, Ying
    contributor authorXu, Ben
    contributor authorLi, Peisheng
    contributor authorWang, Zhaotai
    contributor authorJiang, Shuisheng
    date accessioned2019-02-28T10:56:37Z
    date available2019-02-28T10:56:37Z
    date copyright4/16/2018 12:00:00 AM
    date issued2018
    identifier issn0195-0738
    identifier otherjert_140_08_082003.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4251027
    description abstractThe flow and heat transfer (FHT) in porous volumetric solar receiver was investigated through a double-distributed thermally coupled multiple-relaxation-time (MRT) lattice Boltzmann model (LBM) in this study. The MRT-LBM model was first verified by simulating the FHT in Sierpinski carpet fractal porous media and compared with the results from computational fluid dynamics (CFD). Three typical porous structures in volumetric solar receivers were developed and constructed, and then the FHT in these three porous structures were investigated using the MRT-LBM model. The effects of pore structure, Reynolds (Re) number based on air velocity at inlet, the porosity, and the thermal diffusivity of solid matrix were discussed. It was found that type-III pore structure among the three typical porous structures has the best heat transfer performance because of its lowest maximum temperature of solid particles at the inlet and the highest average temperature of air at the outlet, under the same porosity and heat flux density. Furthermore, increasing the thermal diffusivity of solid particles will lead to higher averaged air temperature at the outlet. It is hoped that the simulation results will be beneficial to the solar thermal community when designing the solar receivers in concentrated solar power (CSP) applications.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleMultiple-Relaxation-Time Lattice Boltzmann Simulation of Flow and Heat Transfer in Porous Volumetric Solar Receivers
    typeJournal Paper
    journal volume140
    journal issue8
    journal titleJournal of Energy Resources Technology
    identifier doi10.1115/1.4039775
    journal fristpage82003
    journal lastpage082003-12
    treeJournal of Energy Resources Technology:;2018:;volume 140:;issue 008
    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