Dynamic optimal ground water remediation including fixed and operation costs

Dynamic optimal ground water remediation including fixed and operation costs

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Article ID: iaor20031123
Country: United States
Volume: 40
Issue: 5
Start Page Number: 481
End Page Number: 490
Publication Date: Sep 2002
Journal: Ground Water
Authors: ,
Keywords: control processes, programming: dynamic
Abstract:

In time-varying ground water remediation, the lack of an optimal control algorithm to simultaneously consider fixed costs and time-varying operating costs makes it nearly impossible to obtain an optimal solution. This study presents a novel algorithm that integrates a genetic algorithm (GA) and constrained differential dynamic programming (CDDP) to solve this time-varying ground water remediation problem. A GA can easily incorporate the fixed costs associated with the installation of wells. However, using a GA to solve for time-varying policies would dramatically increase the computational resources required. Therefore, the CDDP is used to handle the subproblems associated with time-varying operating costs. A hypothetical case study that incorporates fixed and time-varying operating costs is presented to demonstrate the effectiveness of the proposed algorithm. Simulation results indicate that the fixed costs can significantly influence the number and locations of wells, and a notable total cost savings can be realized by applying the novel algorithm herein.

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