| 确定多孔介质孔结构参数的渗流网络分析法 |
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| 引用本文： | 辛峰,王富民,廖晖,李绍芬.确定多孔介质孔结构参数的渗流网络分析法[J].中国化学工程学报,2000,8(4):287-293. |
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| 作者姓名： | 辛峰 王富民 廖晖 李绍芬 |
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| 作者单位： | SchoolofChemicaiEngineeringandTechnology,TianjinUniversity,Tianjin300072,China |
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| 基金项目： | Supported by the National Natural Science Foundation of China(No.29776038). |
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| 摘 要： | According to the simulation of nitrogen sorption process in porous media with three-dimensional network model, and the analysis for such a process with percolation theory, a new method is proposed to determine a pore structure parameter--mean coordination number of pore network, which represents the connectivity among a great number of pores. Here the “chamber-throat“ model and the Weibull distribution are used to describe the pore geometry and the pore size distribution respectively. This method is based on the scaling law of percolation theory after both effects of sorption thermodynamics and pore size on the sorption hysteresis loops are considered. The results show that it is an effective procedure to calculate the mean coordination number for micro- and meso-porous media.
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| 关 键 词： | 多孔介质 结构参数 渗流网络分析法 配位数 渗流理论 吸附作用 氮 吸附热力学 孔尺寸 |
| 修稿时间： | |
Determination of a Pore Structure Parameter of Porous Media by Analysis of Percolation Network Model |
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| XIN Feng,WANG Fumin,Li Shaofen.Determination of a Pore Structure Parameter of Porous Media by Analysis of Percolation Network Model[J].Chinese Journal of Chemical Engineering,2000,8(4):287-293. |
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| Authors: | XIN Feng WANG Fumin Li Shaofen |
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| Affiliation: | School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China |
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| Abstract: | According to the simulation of nitrogen sorption process in porous media with three-dimensional network model, and the analysis for such a process with percolation theory, a new method is proposed to determine a pore structure parameter-mean coordination number of pore network, which represents the connectivity among a great number of pores. Here the "chamber-throat" model and the Weibull distribution are used to describe the pore geometry and the pore size distribution respectively. This method is based on the scaling law of percolation theory after both effects of sorption thermodynamics and pore size on the sorption hysteresis loops are considered. The results show that it is an effective procedure to calculate the mean coordination number for micro- and meso-porous media. |
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| Keywords: | coordination number porous media percolation theory network model sorption |
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