Investigation of Some Performance Indices in Design of Water Distribution Network Based on Hydraulic and Mechanical Reliability Criteria

Document Type : Research Article


1 Shahid Beheshti University

2 Faculty of Civil, Water and Environmental Engineering, Shahid Beheshti University


Due to the high costs of running a water distribution network, the design of the least cost and most reliable networks is of great engineering importance. One issue that has been the focus of recent years' research is the comparison of indices and their relative success in measuring the reliability of water distribution networks. Many studies have been conducted to date on the reliability of water distribution networks. In the present study, the performance of various hydraulic and mechanical parameters was compared to each other under pipe failure conditions. This study provides more performance indices than previous studies. In this paper, The investigation on the nodal pressure performance index, velocity, pressure difference, combined velocity and nodal pressure index, network flexibility performance index (NRI), minimum head surplus index (MSH) and entropy performance index (ERI) on the Hanoi and Pescara water distribution network were performed using NSGA-II optimization algorithm and Epanet software. The results showed that in the design of a small water distribution network (Hanoi), the network flexibility index (NRI) performs best and in the design of a medium water network (Pescara), at low-cost level, node pressure performance index (PIP) and at high-cost level, the Network Flexibility Index (NRI) performed the best among the other indices; the two indices have, on average, created more pressure than other indices on the network and increased surplus energy in the network. Also, in case of accidental failure of several pipes, the nodal demands of the network are more than other indices.


Main Subjects

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