A new multi-objective evolutionary algorithm for the optimization of water distribution networks

A new multi-objective evolutionary algorithm for the optimization of water distribution networks

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This work introduces a new bi-objective optimization model for the design of a water distribution network (WDN).Reliability and design cost are two contradicting objectives that are optimized.The evolutionary technique multi-objective (MO) Jaya, hereafter referred as MO-JAYANET, is developed for the optimal design of WDN.

EPANET is used as a hydraulic network solver in this study.The concept of constraint violation, dominance, non-dominance and cga 200 to cga 510 adapter crowding distance is used to develop MO-JAYANET.As the Jaya algorithm is a parameter-less technique, and with the concept of constraint dominance involved in the MO model, the penalty parameter required to penalize the non-feasible solution is also dropped.

This makes MO-JAYANET a completely parameter-less technique, requiring no tuning at all.MO-JAYANET is applied on two benchmark networks from the literature using three different reliability indices that are Resilience Index, Network Resilience Index, and Modified Resilience Index.MO-JAYANET is found to be very easy and efficient for WDN optimization.

The present work obtains a smooth Pareto Front (PF) that overlaps the best-known PF.The maximum reliability diameters obtained by the MO-JAYANET for the three indices are also simulated for both hydraulic and mechanical failures under different scenarios to identify a better-performing index.HIGHLIGHTS A parameter-less multi-objective optimization technique for the design of Water Supply is developed.

; Three well-known Reliability Indexes (RIs) are used.; The parameter-less Jaya technique is developed for the multi-objective optimization of water animed blue lotion topical spray distribution.; Smooth Pareto fronts that overlap the best-known Pareto front are obtained.

; The RIs are checked for hydraulic and mechanical failures to identify the better performing index.;.