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Direct simulation of the influence of the pore structure on the diffusion process in porous media
Alternative TitleComput. Math. Appl.
Yong, Yumei1; Lou, Xiaojun1; Li, Sha1; Yang, Chao1; Yin, Xiaolong2
2014-02-01
Source PublicationCOMPUTERS & MATHEMATICS WITH APPLICATIONS
ISSN0898-1221
Volume67Issue:2Pages:412-423
AbstractIn this paper, we numerically study the influence of pore structures on diffusion processes in porous media. The porous media geometry models are constructed based on two-dimensional Voronoi diagrams, and they feature randomly connected channels with large pores embedded to simulate the heterogeneity of porous media. A link-type two-relaxation-time (LTRT) lattice Boltzmann (LB) method is employed to solve the diffusion equation. The tortuosity is characterized as a function of porosity and pore structure. From numerical results, a correlation for the tortuosity as a function of porosity is derived for Voronoi geometries without large pores. Geometries with large pores at the same total porosity have higher tortuosity, which indicates that geometric heterogeneity slows down the diffusion. (C) 2013 Elsevier Ltd. All rights reserved.; In this paper, we numerically study the influence of pore structures on diffusion processes in porous media. The porous media geometry models are constructed based on two-dimensional Voronoi diagrams, and they feature randomly connected channels with large pores embedded to simulate the heterogeneity of porous media. A link-type two-relaxation-time (LTRT) lattice Boltzmann (LB) method is employed to solve the diffusion equation. The tortuosity is characterized as a function of porosity and pore structure. From numerical results, a correlation for the tortuosity as a function of porosity is derived for Voronoi geometries without large pores. Geometries with large pores at the same total porosity have higher tortuosity, which indicates that geometric heterogeneity slows down the diffusion. (C) 2013 Elsevier Ltd. All rights reserved.
KeywordDiffusion Process Porosity Tortuosity Lattice Boltzmann Method Porous Media
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.camwa.2013.08.032
URL查看原文
Indexed BySCI
Language英语
WOS KeywordLATTICE BOLTZMANN METHOD ; MONTE-CARLO-SIMULATION ; MOLECULAR-DIFFUSION ; BOUNDARY-CONDITIONS ; TORTUOSITY ; SEDIMENTS ; DISPERSION ; ADVECTION ; EQUATIONS ; COEFFICIENTS
WOS Research AreaMathematics
WOS SubjectMathematics, Applied
WOS IDWOS:000331156800015
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/8074
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Colorado Sch Mines, Dept Petr Engn, Golden, CO 80402 USA
Recommended Citation
GB/T 7714
Yong, Yumei,Lou, Xiaojun,Li, Sha,et al. Direct simulation of the influence of the pore structure on the diffusion process in porous media[J]. COMPUTERS & MATHEMATICS WITH APPLICATIONS,2014,67(2):412-423.
APA Yong, Yumei,Lou, Xiaojun,Li, Sha,Yang, Chao,&Yin, Xiaolong.(2014).Direct simulation of the influence of the pore structure on the diffusion process in porous media.COMPUTERS & MATHEMATICS WITH APPLICATIONS,67(2),412-423.
MLA Yong, Yumei,et al."Direct simulation of the influence of the pore structure on the diffusion process in porous media".COMPUTERS & MATHEMATICS WITH APPLICATIONS 67.2(2014):412-423.
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