Research Article
Mar 1976
Transient Aquifer Flows by Characteristics Methods
Publication: Journal of the Hydraulics Division
Volume 102, Issue 3
Abstract
A numerical model is presented to analyze nonsteady radial flow in a finite or infinite leaky aquifer system. An equation of motion alteration, which involves the introduction of an inertia multiplier, converts the standard equations of transient ground-water flow to a form suitable for efficient solution by the method of characteristics. The result is a numerical method that should be attractively competitive in computer time usage with other numerical procedures currently in use. The equations are presented and the procedure developed for axisymmetrical flow. Several examples are used to expose the influence of the size of the distance intervals and the size of the inertia multiplier on the accuracy of the numerical process. Either constant or time-variable discharge or drawdown rates may be used as boundary conditions in infinite or bounded radial aquifer systems. Radially varying aquifer properties and leakage may also be treated.
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Published In
Journal of the Hydraulics Division
Volume 102 • Issue 3 • March 1976
Pages: 293 - 305
Copyright
© 1976 American Society of Civil Engineers.
History
Published in print: Mar 1976
Published online: Feb 3, 2021
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Authors
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E. Benjamin Wylie, M.ASCE
Prof. of Civ. Engrg., Univ. of Michigan, Ann Arbor, Mich
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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.