Automatic Real-time Model Calibration Tool for Groundwater Contaminant Transport

摘要

The successful environmental assessment of nuclear facilities and waste repositories depends on reliable predictive models describing contaminant migration in underground media. The effectiveness of ground water models is mainly determined by the accuracy values of their parameter values. Groundwater model parameters can be estimated by calibrating the governing transport equations according to field observations. This work describes a new automatic calibration procedure integrating an off-the-shelf data acquisition system and an optimization approach to the nonlinear inverse problem. The contaminant transport problem is posed here as the analogous heat transfer problem in a three-dimensional saturated medium. The intermediate-scale physical aquifer box is equipped with a conventional data-logging system (LabVIEW~(TM)) for monitoring temperature in time and space. Parameter estimation routines programmed in MATLAB~(TM)-based m-files are embedded in the LabVIEW~(TM) data acquisition routine.