Modeling of Free Surface in Steady-State Radial Seepage
Publication: Journal of Hydrologic Engineering
Volume 2, Issue 1
Abstract
The free surface occurs as one of the boundaries in all unconfined ground-water flow problems. Determination of the free surface has received considerable attention in the literature. For computing free surface, models have been either developed neglecting the vertical velocity or including the effect of vertical velocity. However, it is found that in certain situations, none of these models are able to simulate the steady-state free surface profiles. With this in view, a new model based on the considerations of vertical velocity is proposed to analyze the free surface in case of steady-state radial seepage. It is found that the existing models of computing free surface are the particular cases of the present model. Also, the computed free surface profiles using the present model are found to match well with the observed profiles. Thus, the present model can be used to represent steady-state free surface profiles.
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References
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Greenkorn, R. A. (1983). Flow phenomena in porous media: applications in petroleum, water and food production. Marcel Dekker, New York, N.Y.
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Hantush, M. S. (1964). “Well hydraulics.”Adv. in Hydrosci., V. T. Chow, ed., Academic Press, New York, N.Y.
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Kumar, N. (1995). “Determination of free surface in steady state seepage,” ME thesis, Dept. of Civ. Engrg., Univ. of Roorkee, India.
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Neuman, S. P., and Witherspoon, P. A.(1971). “Analysis of nonsteady flow with a free surface using the finite element method.”Water Resour. Res., 7(3), 611–623.
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Information
Published In
Journal of Hydrologic Engineering
Volume 2 • Issue 1 • January 1997
Pages: 39 - 41
Copyright
Copyright © 1997 American Society of Civil Engineers.
History
Published online: Jan 1, 1997
Published in print: Jan 1997
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