ABSTRACT
This chapter focuses on the preparatory task of the Constraint Manager in formulating the optimization problem. The following objectives have been set for the Constraint Manager: the problem should be formulated in such a way that it can be solved rapidly; the problem should be kept as small as possible; and the water-system process descriptions involved should be as accurate as possible. In linear modeling, much effort is generally spent in determining an accurate representation of nonlinear relationships. Nonlinear relationships have to be linearized, preferably in such a way that the linearization process does not violate the original nonlinear behavior. The optimization model is based on the simulation model and a further schematization of the real-world water system. A groundwater system consists of a saturated and an unsaturated zone. The prediction model provides an estimate of the interactions between the saturated and the unsaturated zones.
