Permeability of mono- and bi-dispersed porous media
Permeability of mono- and bi-dispersed porous media
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单分散和双分散多孔介质的渗透率
DOI：
10.1051/epjconf/20134501018
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
S. Kim
中科院分区：
文献类型：
--
作者：
C. Byon;S. Kim
在本研究中，考虑了单分散和双分散多孔介质的渗透率。通过实验和分析研究了颗粒粒度分布和颗粒堆积结构对渗透率的影响。实验和分析结果均表明，单分散多孔介质的粒径分布接近对数正态分布，渗透率随粒径分布范围的增大呈准线性减小；另一方面，颗粒的堆积结构对渗透率的影响可以忽略不计。双分散多孔介质的渗透率随团簇尺寸的增大呈准线性降低，且几乎与颗粒尺寸分布无关。该模型在传热应用中的典型参数范围内是有效的。
In this study, the permeability of mono- and bi-dispersed porous media is considered. The effects of the particle size distribution and the packing structure of particles on the permeability are investigated experimentally and analytically. Both experimental and analytic results suggest that the particle size distribution is close to the log-normal distribution, and the permeability of the mono-dispersed porous media quasi-linearly decreases as the range of the particle size distribution increases. On the other hand, the effect of packing structure of particles on the permeability is shown to be negligible. The permeability of the bi- dispersed porous media quasi-linearly decreases as the range of cluster size increases, and nearly independent of the particle size distribution. The present model is valid over the range of parameters typically found in heat transfer applications.