| 基于孔喉模型的多孔介质对流换热系数的分形研究 |
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| 引用本文： | 郑坤灿,侯戎彬,王景甫,任雁秋,李保卫,姜亚玲,武文斐. 基于孔喉模型的多孔介质对流换热系数的分形研究[J]. 科学技术与工程, 2014, 14(28) |
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| 作者姓名： | 郑坤灿 侯戎彬 王景甫 任雁秋 李保卫 姜亚玲 武文斐 |
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| 作者单位： | 内蒙古科技大学,内蒙古科技大学,北京工业大学,内蒙古科技大学,内蒙古科技大学,内蒙古科技大学,内蒙古科技大学 |
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| 基金项目： | 国家自然科学基金(批准号: 51166010)；国家重点基础研究发展(973)计划(批准号:2012CB720402) |
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| 摘 要： | 多孔介质作为一种良好的蓄热和换热材料,在工农业生产中有着广泛应用,获取准确和适用范围广的多孔介质对流换热系数有重要的研究价值。本文先介绍了多孔介质分形理论基础,然后基于多孔介质孔喉模型并结合分形理论、渗流理论及对流换热理论对多孔介质对流换热系数关联式进行理论推导,最后将得出的对流换热系数与传统对流换热系数进行对比并进行了修正。修正后的分形解与传统解比较一致,在孔隙率0.25~0.5的范围偏差较小,而其形式也验证了外部绕流比内部管流更接近多孔介质流动本质。
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| 关 键 词： | 多孔介质 对流换热系数 分形理论 |
| 收稿时间： | 2014-04-09 |
| 修稿时间： | 2014-05-19 |
Study of fractal convection heat transfer coefficient in porous media based on pore and throat model |
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| ZHENG kuncan,HOU rongbin,WANG jingfu,REN yanqiu,LI baowei,JIANG yaling and WU wenfei. Study of fractal convection heat transfer coefficient in porous media based on pore and throat model[J]. Science Technology and Engineering, 2014, 14(28) |
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| Authors: | ZHENG kuncan HOU rongbin WANG jingfu REN yanqiu LI baowei JIANG yaling WU wenfei |
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| Affiliation: | Inner Mongolia Key Laboratory for Utilization of Bayan Obo Multi-Metallic Resources: Elected State Key Laboratory,Inner Mongolia University of Science and Technology,Baotou City,College of Environment and Energy Engineering,BJUT,Inner Mongolia Key Laboratory for Utilization of Bayan Obo Multi-Metallic Resources: Elected State Key Laboratory,Inner Mongolia University of Science and Technology,Baotou City,Inner Mongolia Key Laboratory for Utilization of Bayan Obo Multi-Metallic Resources: Elected State Key Laboratory,Inner Mongolia University of Science and Technology,Baotou City,Inner Mongolia Key Laboratory for Utilization of Bayan Obo Multi-Metallic Resources: Elected State Key Laboratory,Inner Mongolia University of Science and Technology,Baotou City,Inner Mongolia Key Laboratory for Utilization of Bayan Obo Multi-Metallic Resources: Elected State Key Laboratory,Inner Mongolia University of Science and Technology,Baotou City |
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| Abstract: | The paper introduced the fractal theory foundation of porous media at first. Then it established the pore and throat model of porous media and theoretically derived the formula of fractal convection heat transfer coefficient. Finally, it compared the fractal convection heat transfer coefficient with traditional solution and corrected the fractal convection heat transfer coefficient. |
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| Keywords: | porous media convection heat transfer coefficient fractal theory |
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