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Evidence for a nonzero tansport threshold in porous media
Author(s) -
Marck Steven C.
Publication year - 1999
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/1998wr900062
Subject(s) - porosity , porous medium , permeability (electromagnetism) , conductivity , materials science , electrical resistivity and conductivity , geotechnical engineering , mechanics , geology , composite material , physics , chemistry , membrane , biochemistry , quantum mechanics
The transport properties of porous media at low porosities are analyzed. In particular, the electrical conductivity and the permeability are considered. Several experimental results in the literature indicate that conductivity and permeability decrease significantly in the region 5–10% porosity. Recent progress in the theoretical understanding of simple porous media lead to the conclusion that transport ceases at a threshold value of 3% porosity. By modifying the Archie equation and the Kozeny‐Carman equation accordingly, one can account for the low‐porosity behavior of both conductivity and permeability.