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Dynamic Determination of Capillary Conductivity Extended for Non‐Negligible Membrane Impedance
Author(s) -
Miller E. E.,
Elrick D. E.
Publication year - 1958
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1958.03615995002200060002x
Subject(s) - capillary action , conductivity , outflow , electrical impedance , slab , mechanics , transient (computer programming) , capillary pressure , exponential function , membrane , materials science , porous medium , porosity , physics , chemistry , mathematics , composite material , mathematical analysis , computer science , meteorology , biochemistry , quantum mechanics , geophysics , operating system
W. R. Gardner's recent method for determining capillary conductivity from the transient outflow of a slab following a small step‐change of pressure has been extended to cases in which the impedance of the supporting membrane or porous plate must be taken into account. From this theoretical result a practical method is developed employing all of the experimental data (not just the exponential tail) for determining K values accurate within the inherent limits of the data.