Author(s): Bernard B. Hsieh
Linked Author(s):
Keywords: Integrated modelling technique; Uncertainties
Abstract: An integrated modelling technique, which includes numerical simulation, optimization, and uncertainty analysis, was developed for investigating an optimal decision of contaminant plume capture design in groundwater. A generalized linkage between a numerical model, such as FEMWATER (a three-dimensional finite-element code) from the GMS (Department of Defense Groundwater Modelling System), and an optimization solver based on the unit-response matrix method was first constructed. The next step was to insert the parameter and boundary uncertainties into the hydraulic gradient control schemes. The developed sensitivity coefficients were then combined with the response coefficient calculation and considered as additional design constraints in the optimization process. A real case study to examine the optimal capture zone design for the uncertainties of hydraulic conductivity, infiltration rate, and constant head boundary was demonstrated.
Year: 2001