Pumping optimization in saltwater‐intruded coastal aquifers

TLDR

The well field comprises freshwater outflow, pumping wells, and a recharge canal. The paper investigates optimizing pumping in saltwater‑intruded coastal aquifers to maximize total pumping rate while preventing saltwater front intrusion into wells. Analytical solutions are derived for one‑well, two‑well, and one‑well‑with‑recharge‑canal configurations, and a structured messy genetic algorithm is employed to search for optimal solutions in multi‑well scenarios. Analytical solutions for the one‑well, two‑well, and one‑well‑with‑recharge‑canal problems are presented.

Abstract

This paper investigates the hydraulic issues of pumping well optimization in saltwater‐intruded coastal aquifers. The well field includes freshwater outflow, pumping wells, and a recharge canal. The objective is to maximize the total pumping rate subject to the constraint of no intrusion of the saltwater front into the wells. Analytical solutions are presented for one‐well, two‐well, and one‐well‐with‐recharge‐canal problems. For problems involving multiple pumping wells, a structured messy genetic algorithm is used to search for the optimal solution.