Study on heterogeneity of pore structure to permeability by MRT LBM

doi:10.7523/j.issn.2095-6134.2018.02.007

›› 2018, Vol. 35 ›› Issue (2): 193-199.DOI: 10.7523/j.issn.2095-6134.2018.02.007

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Study on heterogeneity of pore structure to permeability by MRT LBM

MA Bin¹, SHI Lin², HUANG Chao², XU Qianghui²

1. School of Mechanical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;
2. Insitute of Engineering Thermophysics, Department of Energy and Power Engineering, Tsinghua University, Beijing 100081, China

Received:2017-05-02 Revised:2017-09-25 Online:2018-03-15

Abstract

Abstract: Porosity and permeability are very important characters of a porous media.In this work, MRT LBM was used to study the pore structure influence on permeability and the porosity loss influence on permeability loss. Our simulation results are shown as follows. If there are some factors which cause even decreasing of porosity, such as that of depositing, sediment, and coking, the scope of permeability loss is larger than that of porosity loss. In same-porosity-different-structure (SPDS) porous media, there are extraordinary differences in permeability depending on their own pore structures.A larger ratio of max throat length to min throat length leads to a smaller permeability,and a larger tortuosity leads to a smaller permeability.

Key words: permeabilty loss, MRT LBM, SPDS, ratio of max throat length to min throat length, tortuosity

CLC Number:

TK224

MA Bin, SHI Lin, HUANG Chao, XU Qianghui. Study on heterogeneity of pore structure to permeability by MRT LBM[J]. , 2018, 35(2): 193-199.

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Study on heterogeneity of pore structure to permeability by MRT LBM

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