scholarly journals An electrical conductivity model for fractal porous media

2015 ◽  
Vol 42 (12) ◽  
pp. 4833-4840 ◽  
Author(s):  
Wei Wei ◽  
Jianchao Cai ◽  
Xiangyun Hu ◽  
Qi Han
Keyword(s):  
Electrical Conductivity ◽  
Porous Media ◽  
Conductivity Model

Grain consolidation and electrical conductivity in porous media

1985 ◽  
Vol 31 (9) ◽  
pp. 5990-5997 ◽  
Author(s):  
James N. Roberts ◽  
Lawrence M. Schwartz
Keyword(s):  
Electrical Conductivity ◽  
Porous Media

Analytical Electrical Conductivity Models for Single-Phase and Multi-Phase Fractal Porous Media

Fractals ◽  
2021 ◽  
Author(s):  
Wenhui Song ◽  
Masa Prodanovic ◽  
Jun Yao ◽  
Kai Zhang ◽  
Qiqi Wang
Keyword(s):  
Electrical Conductivity ◽  
Porous Media ◽  
Single Phase ◽  
Multi Phase ◽  
Conductivity Models

A physically based model for the electrical conductivity of partially saturated porous media

2020 ◽  
Vol 223 (2) ◽  
pp. 993-1006
Author(s):  
Luong Duy Thanh ◽  
Damien Jougnot ◽  
Phan Van Do ◽  
Nguyen Van Nghia A ◽  
Vu Phi Tuyen ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Porous Media ◽  
Fractal Dimension ◽  
Water Saturation ◽  
Theoretical Models ◽  
Fluid Composition ◽  
Physically Based Model ◽  
Partially Saturated ◽  
Proposed Model ◽  
Physically Based

SUMMARY In reservoir and environmental studies, the geological material characterization is often done by measuring its electrical conductivity. Its main interest is due to its sensitivity to physical properties of porous media (i.e. structure, water content, or fluid composition). Its quantitative use therefore depends on the efficiency of the theoretical models to link them. In this study, we develop a new physically based model that takes into account the surface conductivity for estimating electrical conductivity of porous media under partially saturated conditions. The proposed model is expressed in terms of electrical conductivity of the pore fluid, water saturation, critical water saturation and microstructural parameters such as the minimum and maximum pore/capillary radii, the pore fractal dimension, the tortuosity fractal dimension and the porosity. Factors influencing the electrical conductivity in porous media are also analysed. From the proposed model, we obtain an expression for the relative electrical conductivity that is consistent with other models in literature. The model predictions are successfully compared with published experimental data for different types of porous media. The new physically based model for electrical conductivity opens up new possibilities to characterize porous media under partially saturated conditions with geoelectrical and electromagnetic techniques.

Fractal Model for Thermal Conductivity of Wetting, Fibrous Porous Media

2012 ◽  
Vol 496 ◽  
pp. 12-16
Author(s):  
Fang Long Zhu ◽  
De Hong Xia ◽  
Yu Zhou
Keyword(s):  
Thermal Conductivity ◽  
Porous Media ◽  
Fractal Dimension ◽  
Effective Thermal Conductivity ◽  
Fractal Model ◽  
Self Similarity ◽  
Conductivity Model ◽  
Electrical Analogy ◽  
Fibrous Porous Media ◽  
Thermal Conductivity Model

The current paper deals with the fractal effective thermal conductivity model for fibrous porous media containing unsaturated water moisture. The model is based on the thermal-electrical analogy and statistical self-similarity of porous media. The fractal effective thermal conductivity model can be expressed as a function of the pore structure (fractal dimension) and architectural parameters of porous media. It is expected that the model will be helpful in the evaluation of thermal comfort for textiles in the whole range of porosity.

Electrical conductivity modeling in fractal non-saturated porous media

2018 ◽  
Author(s):  
Wei Wei ◽  
Jianchao Cai ◽  
Yuxuan Xia ◽  
Xiangyun Hu ◽  
Qi Han
Keyword(s):  
Electrical Conductivity ◽  
Porous Media ◽  
Saturated Porous Media ◽  
Conductivity Modeling
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