Multiobjective Optimization of Pump-and-Treat-Based Optimal Multilayer Aquifer Remediation Design with Flexible Remediation Time
| Autor: | Dibakar Chakrabarty, Thangjam Somchand Singh |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
geography
Mathematical optimization geography.geographical_feature_category Groundwater flow Computer science Environmental remediation MODFLOW Groundwater remediation Aquifer Multi-objective optimization Evolutionary computation Genetic algorithm Environmental Chemistry General Environmental Science Water Science and Technology Civil and Structural Engineering |
| Zdroj: | Journal of Hydrologic Engineering. 16:413-420 |
| ISSN: | 1943-5584 1084-0699 |
| DOI: | 10.1061/(asce)he.1943-5584.0000327 |
| Popis: | Groundwater flow model MODFLOW 2000 and contaminant transport model MT3DMS 5.0 have been directly linked with nondominated sorting genetic algorithm (NSGA) II using a novel technique to solve a multiobjective pump-and-treat groundwater remediation problem. In this technique, the system simulators in their compiled forms are directly coupled with the optimization algorithm. The performance of the model has been evaluated on a multiobjective groundwater remediation problem based on a hypothetical confined multilayered aquifer under steady-state flow condition. Two conflicting objectives, viz, minimization of remediation cost and minimization of remediation time subject to upper and lower bounds on extraction rates, upper bounds on hydraulic heads, and contaminant concentration levels, are incorporated into the optimization formulation. Incorporation of discrete cost components into the objective cost function renders it to be discontinuous and nondifferentiable, and the resulting Pareto front exhibits disjo... |
| Databáze: | OpenAIRE |
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