Abstract
The transient, nonlinear Richards' equation describing flow in partially saturated porous media is solved numerically using several time-discretization strategies. The aim of the research is to compare the computational efficiency of conventional iterative schemes with several newer non-iterative formulations. The Implicit Factored method in particular appears to be an attractive alternative because of its high accuracy and two-level nature. The performance of the different schemes is evaluated over a range of accuracy levels, using both the standard form of Richards' equation and a modified form with a forcing term added (allowing comparisons with an exact solution). The limitations and advantages of the different time-discretization approaches are discussed.
Original language | English (US) |
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Title of host publication | Computational Methods in Subsurface Hydrology |
Editors | G. Gambolati, A. Rinaldo, C.A. Brebbia, W.G. Gray, G.F. Pinder |
Publisher | Publ by Springer-Verlag Berlin |
Pages | 161-167 |
Number of pages | 7 |
ISBN (Print) | 038752701X |
State | Published - Dec 1 1990 |
Event | Proceedings of the 8th International Conference on Computational Methods in Water Resources - Venice, Italy Duration: Jun 11 1990 → Jun 15 1990 |
Publication series
Name | Computational Methods in Subsurface Hydrology |
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Other
Other | Proceedings of the 8th International Conference on Computational Methods in Water Resources |
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City | Venice, Italy |
Period | 6/11/90 → 6/15/90 |
All Science Journal Classification (ASJC) codes
- Engineering(all)