EFFECTIVE GAS DIFFUSION COEFFICIENT OF FRACTAL POROUS MEDIA WITH ROUGH SURFACES BY MONTE CARLO SIMULATIONS

被引：4
|
作者：
Yin, Zuozhuang
Zheng, Qian [1 ]
Wang, Huili
Guo, Xiuya
机构：
[1] Wuhan Text Univ, Sch Math & Phys Sci, Wuhan 430073, Peoples R China
来源：
FRACTALS-COMPLEX GEOMETRY PATTERNS AND SCALING IN NATURE AND SOCIETY | 2022年 / 30卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Roughness; Gas Diffusion; Fractal; Porous Media; SELF-DIFFUSION; MODEL; PERMEABILITY; FLOW; TORTUOSITY; LAYER; CONDUCTIVITY; CHARACTERS; GEOMETRY; CONTACT;
D O I：
10.1142/S0218348X22500104
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
Gas diffusion coefficient is an important parameter in characterizing gas transport in porous media. Based on the fractal characteristics of microscopic capillaries, the effect of capillary surface roughness on gas diffusion is considered by the Monte Carlo technique. We proposed a probability model of the effective gas diffusion coefficient of the porous media with rough surfaces. This model is expressed as a function of the geometrical parameters of porous media, such as the porosity, the pore fractal dimension, the tortuosity fractal dimension, and the relative roughness. The simulated effective gas diffusion coefficient is compared with the available experimental data and a good agreement between them is obtained. The effect of the structural parameters of porous media on gas diffusion is analyzed in detail.
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页数：11
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