Representing pump-capacity relations in groundwater simulation models
Ground Water
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Abstract
The yield (or discharge) of constant-speed pumps varies with the total dynamic head (or lift) against which the pump is discharging. The variation in yield over the operating range of the pump may be substantial. In groundwater simulations that are used for management evaluations or other purposes, where predictive accuracy depends on the reliability of future discharge estimates, model reliability may be enhanced by including the effects of head-capacity (or pump-capacity) relations on the discharge from the well. A relatively simple algorithm has been incorporated into the widely used MODFLOW groundwater flow model that allows a model user to specify head-capacity curves. The algorithm causes the model to automatically adjust the pumping rate each time step to account for the effect of drawdown in the cell and changing lift, and will shut the pump off if lift exceeds a critical value. The algorithm is available as part of a new multinode well package (MNW2) for MODFLOW.
Suggested Citation
Konikow, L.F., 2010, Representing pump-capacity relations in groundwater simulation models: Ground Water, v. 48, no. 1, p. 106-110, https://doi.org/10.1111/j.1745-6584.2009.00619.x.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Representing pump-capacity relations in groundwater simulation models |
| Series title | Ground Water |
| DOI | 10.1111/j.1745-6584.2009.00619.x |
| Volume | 48 |
| Issue | 1 |
| Publication Date | December 23, 2009 |
| Year Published | 2010 |
| Language | English |
| Publisher | Wiley |
| Contributing office(s) | National Research Program - Eastern Branch, Toxic Substances Hydrology Program |
| Description | 5 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Ground Water |
| First page | 106 |
| Last page | 110 |
| Country | United States |