Numerical analyses of effective dielectric constant of multiphase microporous media
Numerical analyses of effective dielectric constant of multiphase microporous media
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DOI：
10.1063/1.2743738
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发表时间：
2007-06-01
影响因子：
3.2
通讯作者：
Pan, Ning
中科院分区：
文献类型：
--
作者：
Wang, Moran;Pan, Ning
本文提供了一个完整的数值工具集的建模和预测的有效的表观介电常数的多相微孔介质，其中包括一个多参数的随机生成-生长算法生成的多相多孔介质的微结构和格子Boltzmann求解器通过多孔结构的电势输运方程。在得到简单几何条件下的理论解的验证后，本文研究了多相微孔介质的相分布对有效介电常数的影响，包括颗粒尺寸、结构各向异性以及相间润湿特性引起的相聚集对多相微孔介质有效介电常数的影响。所得的预测在最后同意与现有的两相和三相情况下的实验数据。(c)2007年，美国物理学会。
This paper provides a full numerical tool set for modeling and predicting an effective apparent dielectric constant of multiphase microporous media, which includes a multiparameter random generation-growth algorithm for generating microstructures of multiphase porous media and a lattice Boltzmann solver for the electric potential transport equations through porous structures. After being validated by the theoretical solutions for simple geometries, the present methods are used to investigate the phase distribution effects on the effective dielectric constant of multiphase microporous media, including the effects of particle size, structure anisotropy, and phase aggregation caused by wetting characteristics between phases for multiphase cases. The resultant predictions at the end agree well with the existing experimental data for both two-phase and three-phase cases. (c) 2007 American Institute of Physics.