Experimental study and theoretical analysis of fluid resistance in porous media of glass spheres  

作　　者：王彤 郑坤灿 贾宇鹏 付承鹭 龚志军 武文斐 

机构地区：[1]Institute of Energy and Environment Inner Mongolia University of Science and Technology [2]Inner Mongolia Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metallic ResourcesInner Mongolia University of Science and Technology

出　　处：《Chinese Physics B》2017年第7期228-233,共6页中国物理B（英文版）

基　　金：Project supported by the National Basic Research Program of China(Grant No.2012CB720402);Appling Technology Research and Development Fund from Inner Mongolia,China(Grant No.20130310);College Creative Group Research Program from Inner Mongolia,China(Grant No.NMGIRT1406)

摘　　要：Porous media have a wide range of applications in production and life, as well as in science and technology. The study of flow resistance in porous media has a great effect on industrial and agricultural production. The flow resistance of fluid flow through a 20-mm glass sphere bed is studied experimentally. It is found that there is a significant deviation between the Ergun equation and the experimental data. A staggered pore-throat model is established to investigate the flow resistance in randomly packed porous media. A hypothesis is made that the particles are staggered in a regular triangle arrangement. An analytical formulation of the flow resistance in random porous media is derived. There are no empirical constants in the formulation and every parameter has a specific physical meaning. The formulation predictions are in good agreement with the experimental data. The deviation is within the range of 25%. This shows that the staggered pore-throat model is reasonable and is expected to be verified by more experiments and extended to other porous media.Porous media have a wide range of applications in production and life, as well as in science and technology. The study of flow resistance in porous media has a great effect on industrial and agricultural production. The flow resistance of fluid flow through a 20-mm glass sphere bed is studied experimentally. It is found that there is a significant deviation between the Ergun equation and the experimental data. A staggered pore-throat model is established to investigate the flow resistance in randomly packed porous media. A hypothesis is made that the particles are staggered in a regular triangle arrangement. An analytical formulation of the flow resistance in random porous media is derived. There are no empirical constants in the formulation and every parameter has a specific physical meaning. The formulation predictions are in good agreement with the experimental data. The deviation is within the range of 25%. This shows that the staggered pore-throat model is reasonable and is expected to be verified by more experiments and extended to other porous media.

关 键 词：porous media random packing staggered pore-throat model flow resistance 

分 类 号：O357.3[理学—流体力学]