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A capillarity correction for free surface flow of groundwater
Author(s) -
Parlange J.Y.,
Brutsaert Wilfried
Publication year - 1987
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/wr023i005p00805
Subject(s) - aquifer , drawdown (hydrology) , groundwater flow equation , flow (mathematics) , groundwater flow , groundwater , mechanics , free surface , simple (philosophy) , term (time) , surface (topology) , mathematics , geotechnical engineering , geology , mathematical analysis , physics , geometry , philosophy , epistemology , quantum mechanics
The Boussinesq equation describes aquifer movement when capillarity effects are unimportant. A simple correction term to the equation is proposed here to take those effects into account. The correction can be quite significant for relatively short times. Comparison with experimental observations for a sudden drawdown shows that the present theory greatly improves the Boussinesq equation.