Improving a complex finite-difference ground water flow model through the use of an analytic element screening model
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Abstract
This paper demonstrates that analytic element models have potential as powerful screening tools that can facilitate or improve calibration of more complicated finite-difference and finite-element models. We demonstrate how a two-dimensional analytic element model was used to identify errors in a complex three-dimensional finite-difference model caused by incorrect specification of boundary conditions. An improved finite-difference model was developed using boundary conditions developed from a far-field analytic element model. Calibration of a revised finite-difference model was achieved using fewer zones of hydraulic conductivity and lake bed conductance than the original finite-difference model. Calibration statistics were also improved in that simulated base-flows were much closer to measured values. The improved calibration is due mainly to improved specification of the boundary conditions made possible by first solving the far-field problem with an analytic element model.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Improving a complex finite-difference ground water flow model through the use of an analytic element screening model |
| Series title | Groundwater |
| DOI | 10.1111/j.1745-6584.1998.tb02108.x |
| Volume | 36 |
| Issue | 6 |
| Publication Date | August 04, 2005 |
| Year Published | 1998 |
| Language | English |
| Publisher | National Groundwater Association |
| Description | 7 p. |
| First page | 1011 |
| Last page | 1017 |