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Probing porous media with superfluid acoustics

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  • Johnson, David Linton

Abstract

We discuss what one can learn from experiments using superfluid 1st, 2nd, 4th, and 3rd sound measurements in porous media; we also explore the transferability of these results to other transport experiments. Many of the relevant geometrical parameters are those which arise in a canonical electrical conductivity problem in which the porous solid is insulating, the pore fluid is conducting, and there is an additional surface conductivity lining the walls of the pore space. The most important geometrical parameters are the 3-dimensional tortuosity of the pore space, α3, the 2-dimensional tortuosity of the pore/grain interface, α2, and Λ, which is a well-defined measure of dynamically connected pore sizes.

Suggested Citation

  • Johnson, David Linton, 1989. "Probing porous media with superfluid acoustics," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 157(1), pages 593-600.
    • Handle: RePEc:eee:phsmap:v:157:y:1989:i:1:p:593-600
    DOI: 10.1016/0378-4371(89)90368-3
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