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Pressure dependent stochastic reliability analysis of water distribution networks

Tabesh, M. and Tanyimboh, T. and Burrows, R. (2004) Pressure dependent stochastic reliability analysis of water distribution networks. Water Science and Technology: Water Supply, 4 (3). pp. 81-90. ISSN 1606-9749

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Abstract

Any reliability analysis based on just deterministic values of daily average or peak demands, cannot represent the overall system reliability realistically. Using a stochastic model in this paper variations of the system and nodal reliability values are investigated through a period of time. Considering probabilistic nature of demands, this paper combines the extended period simulation of water distribution networks with the head driven simulation based reliability analysis that presents the nodal and system reliabilities more realistically than conventional demand driven simulation based analysis. A sample network with possibility of one link failure is examined and diurnal profile of reliability values due to mechanical and hydraulic failures and known probabilities of demands is presented. It is seen that considering the probabilistic nature of demands the severity of mechanical and hydraulic failures on the hydraulic performance of the system are illustrated properly and realistically, especially at the critical times or nodes, in comparison with the deterministic values.

Item type: Article
ID code: 6850
Keywords: reliability analysis, stchastic models, water distribution networks, head driven simulation, nodal reliability, Engineering (General). Civil engineering (General), Water Science and Technology
Subjects: Technology > Engineering (General). Civil engineering (General)
Department: Faculty of Engineering > Civil and Environmental Engineering
Related URLs:
Depositing user: Strathprints Administrator
Date Deposited: 04 Oct 2008
Last modified: 04 Sep 2014 16:04
URI: http://strathprints.strath.ac.uk/id/eprint/6850

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