Research Article
Jun 1970
Unconfined Aquifer Seepage by Capillary Flow Theory
Publication: Journal of the Hydraulics Division
Volume 96, Issue 6
Abstract
A numerical scheme is presented to analyze a two-dimensional unconfined aquifer of rectangular cross-section to determine the fall of the water table, the water content and the rate of outflow into an adjoining water body which fully penetrates the aquifer. The capillary or unsaturated flow above the water table is considered through the use of Richards' equation. It was found that the problem can be solved by an alternating explicit-implicit finite difference scheme. It has the advantage of being efficient and of being suitable even when the fully saturated flow zone is very small. The unknown position of the seepage surface and the unknown boundary between the saturated and the unsaturated zone constitute a very critical aspect of the calculations.
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Published In
Journal of the Hydraulics Division
Volume 96 • Issue 6 • June 1970
Pages: 1331 - 1344
Copyright
© 1970 American Society of Civil Engineers.
History
Published in print: Jun 1970
Published online: Feb 3, 2021
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Authors
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Rameshwar D. Verma, M.ASCE
Res. Engr., Envir. Res. Group, Battelle Memorial Inst., Columbus, Ohio; formerly, Grad. Student at Cornell Univ., Ithaca, N. Y
Wilfried Brutsaert, AM.ASCE
Assoc. Prof. of Civ. Engrg; Dept. of Water Resour. Engrg., Cornell Univ., Ithaca, N. Y
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.