Abstract
The main management challenge in coastal aquifers is to prevent saltwater intrusion, ensuring ample freshwater supply. Saltwater intrusion happens due to unregulated pumping from production wells. Therefore, it is essential to have an effective management policy, which ensures the requisite amount of freshwater to be withdrawn from coastal aquifers without causing saltwater intrusion. A methodology for optimizing production well locations and maximizing pumping from production wells is presented to achieve these conflicting objectives. The location of production wells directly affects the amount of freshwater pumped out of the coastal aquifer. Simultaneous optimization of production well locations and pumping from the same is achieved by linking mathematical simulation models with the optimization algorithm. A new methodology using coupled sharp-interface and density-dependent simulation models is developed to find optimal well locations and optimize the amount of freshwater pumped from the coastal aquifer. The performance of the developed methodology is evaluated for saltwater intrusion in the coastal city of Puri, India. The performance evaluation results show the developed methodology's applicability for managing saltwater intrusion while maximizing freshwater pumping in coastal aquifers under constraints of well location.
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Acknowledgements
This research is a is part of Computational Fluid Lab of Indian Institute of Technology Patna which is funded by Ministry of Human Resource and Development (MHRD), Govt. India. We thank Dr. Himanshu Joshi of Indian Institute of Technology Roorkee providing relevant data for the Puri City. The used data for this article, can be accessed from article and referenced text. Other data can be available on request.
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Dey, S., Prakash, O. Coupled Sharp-interface and Density-dependent Model for Simultaneous Optimization of Production Well Locations and Pumping in Coastal Aquifer. Water Resour Manage 36, 2327–2341 (2022). https://doi.org/10.1007/s11269-022-03145-w
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DOI: https://doi.org/10.1007/s11269-022-03145-w