Decreasing the Discolouration Risk of Drinking Water Distribution Systems through Optimised Topological Changes and Optimal Flow Velocity Control

Journal article (2018)

Authors

E. Abraham Water Resources - CEG
EJM Blokker KWR Water Research Institute
Ivan Stoianov Imperial College London
Research Group
Water Resources (CEG) (TU Delft)
Copyright: © 2017 E. Abraham, EJM Blokker, Ivan Stoianov
DOI
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https://doi.org/10.1061/(ASCE)WR.1943-5452.0000878
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Published Date

2018-2

Language

English

Reuse Rights

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Faculty

Civil Engineering & Geosciences

Department

Water Management

Research Group

Water Resources

Abstract

In this paper, a new mathematical framework is proposed for maximizing the self-cleaning capacity (SCC) of drinking water distribution systems by controlling the diurnal peak flow velocities in the pipes under normal operation. This is achieved through an optimal change of the network connectivity (topology). This paper proposes an efficient algorithm for the network analysis of valve closures, which allows enforcing favorable changes in the flow velocities for maximizing the SCC by determining an optimal set of links to isolate in the forming of a more branched network, while concurrently satisfying the hydraulic and regulatory pressure constraints at the demand nodes. Multiple stochastic demands from an end-use demand model are generated to test the robustness in the improved SCC for the modified network connectivity under changing demand. An operational network model is used to demonstrate the efficacy of the proposed approach.