| 分形多孔介质中流体流动的LBM模拟 |
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| 引用本文： | 王唯威,淮秀兰,蔡军.分形多孔介质中流体流动的LBM模拟[J].工程热物理学报,2007,28(Z2):118-120. |
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| 作者姓名： | 王唯威 淮秀兰 蔡军 |
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| 作者单位： | 1. 中国科学院工程热物理研究所,北京,100080;中国科学院研究生院,北京,100049
2. 中国科学院工程热物理研究所,北京,100080 |
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| 基金项目： | 国家自然科学基金
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国家高技术研究发展计划(863计划) |
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| 摘 要： | 基于分形理论构造了规则Sierpinski地毯结构来模拟多孔介质孔隙结构,采用Lattice Boltzmann Method(LBM)分别对不同孔隙率与进出口压差下的分形多孔介质中的流体流动进行了数值模拟.结果表明,分形多孔介质的某些流场结构也具有分形特征;体积流量和流场进出口压差呈线性关系,符合Darcy定律;流体穿过分形多孔介质的体积流量与孔隙率成指数函数关系.
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| 关 键 词： | 多孔介质 分形理论 Lattice Boltzmann Method |
| 文章编号： | 0253-231X(2007)Suppl.2-0118-03 |
| 修稿时间： | 2007年4月9日 |
LATTICE BOLTZMANN SIMULATION OF FLOWS IN FRACTAL POROUS MEDIA |
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| WANG Wei-Wei,HUAI Xiu-Lan,CAI Jun.LATTICE BOLTZMANN SIMULATION OF FLOWS IN FRACTAL POROUS MEDIA[J].Journal of Engineering Thermophysics,2007,28(Z2):118-120. |
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| Authors: | WANG Wei-Wei HUAI Xiu-Lan CAI Jun |
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| Abstract: | Sierpinski carpets were generated to model the structures of porous media,and then the flow fields in these structures were simulated using lattice Boltzmann method(LBM)at different pressure gradient and different porosity.The calculated results showed that the flow field structures of flow in fractal porous media exhibit fractal characteristics.The flow in fractal porous media obeys Darcy's Law in the range of flow and pressure level studied in this work.The relation of volume flow rate with porosity can be best fitted by an exponential function. |
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| Keywords: | porous media fractal theory lattice Boltzman method |
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