Differential spontaneous capillary flow through heterogeneous porous media

Kausik Bal; Jintu Fan; M.K. Sarkar; Lin Ye

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Differential spontaneous capillary flow through heterogeneous porous media

机译：通过非均质多孔介质的差分自发毛细管流动

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Engineered heterogeneous porous materials with aeolotropic liquid transport properties can have many applications. In this work, spontaneous flow of liquids through layered heterogeneous porous materials is analyzed based on fractal theory. Both capillary pressure and hydraulic resistance are expressed in terms of microscopic variables such as minimum and maximum pore sizes and fractal dimensions. The transplanar liquid flow in terms of the mass absorbed by the different layers against time is computed. The effect of layer configuration and pore size, fractal dimension and porosity in each layer are numerically investigated. It is found that different combinations of porous layers of different porosity and pore size distribution create different absorption patterns, and differential liquid transport properties can be achieved by having a gradient of porosity and pore size across the thickness.

机译：具有各向异性液体传输特性的工程异质多孔材料可以有许多应用。在这项工作中，基于分形理论分析了液体通过层状非均质多孔材料的自发流动。毛细管压力和水力阻力均以微观变量表示，例如最小和最大孔径和分形尺寸。根据不同层吸收的质量随时间的变化计算出经平面液体流量。数值研究了层结构和孔径，分形维数和孔隙率对层的影响。已经发现，具有不同孔隙率和孔径分布的多孔层的不同组合产生了不同的吸收模式，并且可以通过在整个厚度上具有孔隙率和孔径的梯度来获得不同的液体传输性能。

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《International Journal of Heat and Mass Transfer》 |2011年第14期|p.3096-3099|共4页
作者
Kausik Bal; Jintu Fan; M.K. Sarkar; Lin Ye;
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作者单位

Institute of Textiles and Clothing, Hong Kong Polytechnic University, Hong Kong;

Institute of Textiles and Clothing, Hong Kong Polytechnic University, Hong Kong;

Institute of Textiles and Clothing, Hong Kong Polytechnic University, Hong Kong;

School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Australia;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
heterogeneous porous media spontaneous absorption fractal transplaner liquid flow;

机译：非均质多孔介质自发吸收分形平面流;

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Differential spontaneous capillary flow through heterogeneous porous media

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