کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10345997 698616 2014 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Direct simulation of the influence of the pore structure on the diffusion process in porous media
ترجمه فارسی عنوان
شبیه سازی مستقیم اثر ساختار منافذ در فرآیند انتشار در رسانه های متخلخل
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر علوم کامپیوتر (عمومی)
چکیده انگلیسی
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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Mathematics with Applications - Volume 67, Issue 2, February 2014, Pages 412-423
نویسندگان
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