What is it about?
The objective of the current study is to calculate the optimal pumping rates in an unconfined coastal aquifer under steady-state conditions and assuming a sharp saltwater interface. Simulation-optimization models are developed using both the PGSL and SFLA optimization algorithms combined with FEM on Strack's formulation to simulate the groundwater flow. The results of the two optimization algorithms are compared. Both methods are then verified through their application on the aquifer system under the City of Miami Beach in northern Spain. Finally, they are applied to the Quaternary Aquifer of El-Arish Rafah, Egypt.
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Why is it important?
The PGSL which is a relatively new optimization technique outperformed other traditional stochastic optimization techniques such as GA . Also, the run time for the PGSL was greatly the smallest. Both PGSL and SFLA can effectively and efficiently be used to solve real groundwater management problems. PGSL does not give the optimum solution but the obtained results are close to the optimum. As such, the PGSL would be a suitable tool in solving large scale problems (i.e. real-life aquifers) to give an initial orientation, not final decision.
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This page is a summary of: Pumping optimization of coastal aquifers using probabilistic search case study: quaternary aquifer of El-Arish Rafah, Egypt, Hydrology Research, December 2019, IWA Publishing, DOI: 10.2166/nh.2019.093.
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