| 逾渗多孔介质对固体颗粒吸附过程的影响 |
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| 引用本文： | 刘志峰,赵刚,刘正锋,张有为,王晓宏. 逾渗多孔介质对固体颗粒吸附过程的影响[J]. 化工学报, 2007, 58(6): 1478-1482 |
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| 作者姓名： | 刘志峰 赵刚 刘正锋 张有为 王晓宏 |
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| 作者单位： | 中国科学技术大学热科学和能源工程系;力学和机械工程系,安徽,合肥,230027 |
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| 基金项目： | 国家自然科学基金 , 国家自然科学基金 , 安徽省自然科学基金 |
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| 摘 要： | 研究了悬浮液中的颗粒在通过逾渗多孔介质时的被吸附特性。采用数值计算的方法;通过求解描述低速流体流动的Stokes方程以及简化的颗粒运动方程;初步得到颗粒在逾渗多孔介质中的运动轨迹;并在此基础上;求得颗粒与多孔介质内表面的碰撞概率;进而研究颗粒的被吸附特性。数值结果表明均匀多孔介质和分形多孔介质对颗粒的吸附存在本质差异。颗粒流出概率（实际中常表示为出口悬浮液中的颗粒浓度）与多孔床深度间的指数关系仅对均匀多孔介质成立;而对分形多孔介质并不成立。
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| 关 键 词： | 多孔介质 逾渗 颗粒 吸附 |
| 文章编号： | 0438-1157（2007）06-1478-05 |
| 收稿时间： | 2006-06-21 |
| 修稿时间： | 2006-06-212006-08-17 |
Influence of percolation porous media on deposition process |
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| LIU Zhifeng,ZHAO Gang,LIU Zhengfeng,ZHANG Youwei,WANG Xiaohong. Influence of percolation porous media on deposition process[J]. Journal of Chemical Industry and Engineering(China), 2007, 58(6): 1478-1482 |
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| Authors: | LIU Zhifeng ZHAO Gang LIU Zhengfeng ZHANG Youwei WANG Xiaohong |
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| Affiliation: | 1 Department of Thermal Science and Energy Engineering, 2 Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, Anhui, China |
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| Abstract: | The particle deposition in suspension flow through the lattice percolation porous media was studied based on numerical simulation of the Stokes equations and the simplified particle trajectory equation. Numerical results indicated essential differences in the deposition process between homogeneous and fractal porous media. In the homogeneous porous media, the deposition process could be seen as homogeneous. The exponential relation between the par on qu y applicable to homogeneous porous media. While in te heterogeneous. The exponential relation could not ticle-flow-out probability and the system size was fractal porous media, the deposition process was be used in fractal porous media. |
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| Keywords: | porous media percolation particle adsorption |
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