An injection well is a device that places fluid deep underground into porous rock formations, such as sandstone or limestone, or into or below the shallow soil layer. The fluid may be water, treated water, tracer, wastewater, brine (salt water), or water mixed with chemicals.
Use MAGNET to simulate the migration of the continuous tracer plume resulting from injection well (a continuous point source) for the following specific situation and perform a sensitivity analysis with respect to:
- pumping rate and injection rate and
- the leakance of the river characterizing the stream aquifer connection.
Video: Migration of the continuous tracer plume for an injection well. Model parameters: Q = 500 GPM; Hydraulic conductivity of the aquifer: 100
ft/day; Aquifer thickness: 100 ft; Effective porosity: 0.2; River stage difference: 25 ft
MAGNET/Modeling Hints:
- Use ‘Synthetic mode’ in MAGNET to create a model domain.
- You may follow the model set-up described in the animation caption above.
- Use line and features as prescribed head boundaries to generate the head difference from the south edge to the north edge of the model.