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Date of download: 11/11/2017 Copyright © ASME. All rights reserved.

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1 Date of download: 11/11/2017 Copyright © ASME. All rights reserved. From: Poromechanics of Compressible Charged Porous Media Using the Theory of Mixtures J Biomech Eng. 2007;129(5): doi: / Figure Legend: Viscous drag compression: a pressure gradient is applied across a sample. The sample is supported by a porous filter. The hydraulic permeability of the porous filter is orders of magnitude larger than the hydraulic permeability of the sample.

2 Date of download: 11/11/2017 Copyright © ASME. All rights reserved. From: Poromechanics of Compressible Charged Porous Media Using the Theory of Mixtures J Biomech Eng. 2007;129(5): doi: / Figure Legend: Computed strain ε, fluid content ζf, cationic content ζ+, and anionic content ζ− as a function of depth x for a viscous drag experiment. Continuous line: storage modulus M=36.4GPa,  *****: storage modulus M=100GPa. The total viscous drag compression is independent of the storage modulus, while the compression of the fluid relative to the solid does depend on the storage modulus. The open circuit and closed circuit results coincide.

3 Date of download: 11/11/2017 Copyright © ASME. All rights reserved. From: Poromechanics of Compressible Charged Porous Media Using the Theory of Mixtures J Biomech Eng. 2007;129(5): doi: / Figure Legend: Computed electrical potential ξ as a function of depth x for a viscous drag experiment. Continuous line: closed circuit, M=36.4GPa; dashed line: open circuit, M=36.4GPa; and  *****: open circuit, M=100MPa. In closed circuit condition, the electrical potential is set to zero in the upstream and downstream reservoirs. The potentials calculated are Donnan potentials. The streaming current is F[(ζ+ν+s∕V¯+)−(ζ−ν−s∕V¯−)]=0.098μA∕mm2s. In the open circuit condition, the voltage of the upstream reservoir is set to zero. The resulting electrical potential profile is the sum of a Donnan potential and a streaming potential.

4 Date of download: 11/11/2017 Copyright © ASME. All rights reserved. From: Poromechanics of Compressible Charged Porous Media Using the Theory of Mixtures J Biomech Eng. 2007;129(5): doi: / Figure Legend: Computed strain ε, fluid content ζf, cationic content ζ+, and anionic content ζ− as a function of depth x for a viscous drag experiment. M=∞, α=1 (incompressible case). The open circuit and closed circuit results coincide for the quantities shown.


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