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Deviations from Darcy's Law in Saturated Clays
Author(s) -
Olsen Harold W.
Publication year - 1965
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/sssaj1965.03615995002900020009x
Subject(s) - spurious relationship , darcy's law , geology , capillary action , standard deviation , geotechnical engineering , mechanics , soil science , thermodynamics , mathematics , porosity , porous medium , statistics , physics
Atmospheric contamination causes an error in the conventional use of air‐water menisci and air bubbles in capillary tubes for measuring flow rates through clays. This error gives rise to spurious deviations from the conventional criterion for Darcy's law. Data are presented which show the error can be of sufficient magnitude to account for the deviations from Darcy's law in much of the published data on confined clay samples. The error is negligible compared with the deviations in the published data on unconfined clay and sandstone samples.