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SMOOTHED PARTICLE HYDRODYNAMICS SIMULATION OF EFFECTIVE THERMAL CONDUCTIVITY IN POROUS MEDIA OF VARIOUS PORE STRUCTURES
Jiang, Fangming1; Sousa, Antonio C. M.2,3
2010
发表期刊JOURNAL OF POROUS MEDIA
ISSN1091-028X
卷号13期号:11页码:951-960
产权排序[Jiang, Fangming] Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China; [Sousa, Antonio C. M.] Univ Aveiro, Dept Engn Mecan, P-3810193 Aveiro, Portugal; [Sousa, Antonio C. M.] Univ New Brunswick, Dept Mech Engn, Fredericton, NB E3B 5A3, Canada
通讯作者fm_jiang2000@yahoo.com
合作性质国际
摘要Heat conduction through a 2-D porous medium layer with complicated cylindrical or quadrangular pore structures is simulated using the smoothed particle hydrodynamics technique. Heat transfer paths are visualized at the micropore level, and the dependence of the effective thermal conductivity on the micropore structure is analyzed. As expected, heat always follows the path of least resistance through the porous structures. Globally, enhanced heat transfer paths tend to form in the porous medium having the smallest circular inclusions. The dependence of the effective thermal conductivity on the micro pore structure is found to be closely related to the formation of enhanced heat transfer paths. For the porous medium with dispersed pore phase, the inclusion shape and size and the relative arrangement between inclusions do not have any particular effect on the relation between the effective thermal conductivity and the porosity. This finding is also well predicted by the effective medium theoretical (EMT) model with a flexible factor within the range 4.0-4.5. Owing to the significant effect of the pore-phase distribution, for the porous medium with continuous pore phase, the relation between the effective thermal conductivity and porosity can be predicted using the EMT model only if the flexible factor is taken for a value of 3.5.
文章类型Article
其他摘要Heat conduction through a 2-D porous medium layer with complicated cylindrical or quadrangular pore structures is simulated using the smoothed particle hydrodynamics technique. Heat transfer paths are visualized at the micropore level, and the dependence of the effective thermal conductivity on the micropore structure is analyzed. As expected, heat always follows the path of least resistance through the porous structures. Globally, enhanced heat transfer paths tend to form in the porous medium having the smallest circular inclusions. The dependence of the effective thermal conductivity on the micro pore structure is found to be closely related to the formation of enhanced heat transfer paths. For the porous medium with dispersed pore phase, the inclusion shape and size and the relative arrangement between inclusions do not have any particular effect on the relation between the effective thermal conductivity and the porosity. This finding is also well predicted by the effective medium theoretical (EMT) model with a flexible factor within the range 4.0-4.5. Owing to the significant effect of the pore-phase distribution, for the porous medium with continuous pore phase, the relation between the effective thermal conductivity and porosity can be predicted using the EMT model only if the flexible factor is taken for a value of 3.5.
关键词Sph Porous Media Effective Thermal Conductivity Numerical Methods
学科领域Thermodynamics ; Engineering ; Mechanics
WOS标题词Science & Technology ; Physical Sciences ; Technology
研究领域[WOS]Thermodynamics ; Engineering ; Mechanics
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收录类别SCI
语种英语
项目资助者Foundation for Science and Technology, Portugal [POCTI/EME/59728/2004]; Natural Sciences and Engineering Research Council of Canada [12875]; [SFRH/BPD/20273/2004]
WOS类目Thermodynamics ; Engineering, Mechanical ; Mechanics
WOS记录号WOS:000285561200001
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/8520
专题中国科学院广州能源研究所
作者单位1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
2.Univ Aveiro, Dept Engn Mecan, P-3810193 Aveiro, Portugal
3.Univ New Brunswick, Dept Mech Engn, Fredericton, NB E3B 5A3, Canada
推荐引用方式
GB/T 7714
Jiang, Fangming,Sousa, Antonio C. M.. SMOOTHED PARTICLE HYDRODYNAMICS SIMULATION OF EFFECTIVE THERMAL CONDUCTIVITY IN POROUS MEDIA OF VARIOUS PORE STRUCTURES[J]. JOURNAL OF POROUS MEDIA,2010,13(11):951-960.
APA Jiang, Fangming,&Sousa, Antonio C. M..(2010).SMOOTHED PARTICLE HYDRODYNAMICS SIMULATION OF EFFECTIVE THERMAL CONDUCTIVITY IN POROUS MEDIA OF VARIOUS PORE STRUCTURES.JOURNAL OF POROUS MEDIA,13(11),951-960.
MLA Jiang, Fangming,et al."SMOOTHED PARTICLE HYDRODYNAMICS SIMULATION OF EFFECTIVE THERMAL CONDUCTIVITY IN POROUS MEDIA OF VARIOUS PORE STRUCTURES".JOURNAL OF POROUS MEDIA 13.11(2010):951-960.
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