A Geometry Model for Tortuosity of Flow Path in Porous Media
YU Bo-Ming1,2, LI Jian-Hua3
1Department of Physics, Huazhong University of Science and Technology, Wuhan 430074
2The State Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080
3Research Centre of Biomedical Materials Engineering, Wuhan University of Technology, Wuhan 430070
A Geometry Model for Tortuosity of Flow Path in Porous Media
YU Bo-Ming1,2;LI Jian-Hua3
1Department of Physics, Huazhong University of Science and Technology, Wuhan 430074
2The State Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080
3Research Centre of Biomedical Materials Engineering, Wuhan University of Technology, Wuhan 430070
Abstract： A simple geometry model for tortuosity of flow path in porous media is proposed based on the assumption that some particles in a porous medium are unrestrictedly overlapped and the others are not. The proposed model is expressed as a function of porosity and there is no empirical constant in this model. The model predictions are compared with those from available correlations obtained numerically and experimentally, both of which are in agreement with each other. The present model can also give the tortuosity with a good approximation near the percolation threshold. The validity of the present tortuosity model is thus verified.
YU Bo-Ming;LI Jian-Hua. A Geometry Model for Tortuosity of Flow Path in Porous Media[J]. 中国物理快报, 2004, 21(8): 1569-1571.
YU Bo-Ming, LI Jian-Hua. A Geometry Model for Tortuosity of Flow Path in Porous Media. Chin. Phys. Lett., 2004, 21(8): 1569-1571.
2004, Vol. 21 
