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Groundwater Flow in a Sandy Tidal Beach 1. One-Dimensional Finite Element Analysis
Harrison, W. Fang, C. S. Wang, S. N.
Harrison, W.
Fang, C. S.
Wang, S. N.
Abstract
A 31-day time series of observations of beach water table and tidal fluctuations was obtained from 13 wells along a profile perpendicular to the shoreline at Virginia Beach, Virginia. Finite element techniques were applied to solve the one-dimensional, unsteady state, nonlinear equation for groundwater movement. For the finite element analysis, the semi-infinite mass (unconfined aquifer) had to be replaced by a finite mass. The boundary conditions were found from the field data by directly solving the flow equation with a finite difference technique. The finite element method, using the variational principle, provided a reasonable solution and afforded economy in computer time. Field data were compared with the corresponding finite element solution. The results indicate the general accuracy of the methodology
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1971
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Virginia Institute of Marine Science