Author

Hewitt

Date of Award

6-1990

Degree Name

Master of Science

Department

Geological and Environmental Sciences

First Advisor

Dr. Duane R. Hampton

Second Advisor

Dr. Alan Kehew

Third Advisor

Dr. W. Thomas Straw

Access Setting

Masters Thesis-Open Access

Abstract

Simulation of a two-well tracer test at a site near Mobile, Alabama was performed and compared with the experimental breakthrough curve. The models used to simulate the test results were the three-dimensional USGS code HST3D and the two-dimensional USGS code MOC. The results of the three-dimensional model were also compared with the results of the two-dimensional model.

The three-dimensional model HST3D predicted the measured breakthrough curve accurately with the exception of early arrival times of the tracer in the withdrawal well. The two-dimensional model MOC did not accurately predict the bromide concentration in the withdrawal well during the two-well test. When the dispersivity was increased forty-fold, the MOC results approximated the measured breakthrough curve.

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