Harmony search optimisation to the pump-included water distribution network design

This work is to present an optimisation model for the design of water distribution networks which include pumps. Pump-included water distribution networks have not been featured in the literature of hydrosystems optimisation as often as simple gravity-based water networks, which have gained popularity in the optimisation field. The optimisation model for the pump-included water network uses a music-inspired evolutionary algorithm, harmony search (HS), which mimics a music improvisation process in order to find better design solutions. Use of HS would obtain better results in terms of average design cost, number of function evaluations, and hydraulic simulation condition as compared to those of another evolutionary algorithm, simulated annealing.