Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| 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
 |
| ISSN | 1091-028X |
| 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 |
| URL | 查看原文 |
| 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 | |
| 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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