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Controlled Instantaneous Application of Free Water to a Porous Surface
Author(s) -
Swartzendruber D.,
Asseed M. S.
Publication year - 1973
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/sssaj1973.03615995003700060047x
Subject(s) - free water , free surface , porous medium , porosity , flow (mathematics) , materials science , volume (thermodynamics) , head (geology) , water flow , flow resistance , mechanics , hydraulic head , geotechnical engineering , composite material , geology , thermodynamics , physics , geomorphology
Instantaneous application of free water to a porous‐medium surface is achieved essentially by a device in which the central feature is a plastic plate perforated with small holes. The pressure head of the water can be controlled at a preselected value between 0 and 1 cm. Water enters the porous mdium at essentially zero external flow resistance, while volume and time of entry can be measured accurately. No lateral flow of free water occurs, thus eliminating the disturbing effects of such flow on the porous‐medium surface.