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Upscaling Permeation Properties in Porous Materials from Pore Size Distributions
This paper aims at presenting a new model capable to estimate the apparent permeability directly from pore size distribution. The apparent permeability evolution with mean pressure is estimated by combining Darcy's law which represents the flow in the porous media at the macroscale and a combination of Poiseuille's and Knudsen's laws which represent, respectively, viscous flow and the diffusion flow at the microscale. Comparisons with experimental data acquired on mortar specimen show that the model is able to reproduce the apparent permeability evolution with mean pressure observed experimentally depending on two fitted parameters: the tortuosity and a cutting diameter that weight the contribution of the large pores to the permeability.
Upscaling Permeation Properties in Porous Materials from Pore Size Distributions
This paper aims at presenting a new model capable to estimate the apparent permeability directly from pore size distribution. The apparent permeability evolution with mean pressure is estimated by combining Darcy's law which represents the flow in the porous media at the macroscale and a combination of Poiseuille's and Knudsen's laws which represent, respectively, viscous flow and the diffusion flow at the microscale. Comparisons with experimental data acquired on mortar specimen show that the model is able to reproduce the apparent permeability evolution with mean pressure observed experimentally depending on two fitted parameters: the tortuosity and a cutting diameter that weight the contribution of the large pores to the permeability.
Upscaling Permeation Properties in Porous Materials from Pore Size Distributions
Khaddour, Fadi (author) / Grégoire, David (author) / Guatarbes, Bertrand (author) / Pijaudier-Cabot, Gilles (author)
Fifth Biot Conference on Poromechanics ; 2013 ; Vienna, Austria
Poromechanics V ; 2316-2324
2013-06-18
Conference paper
Electronic Resource
English
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