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Title: Monitoring the hydraulic dynamics in water distribution systems
Author: Hoskins, Asher John
ISNI:       0000 0004 7228 652X
Awarding Body: Imperial College London
Current Institution: Imperial College London
Date of Award: 2016
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Mankind has used pressurised pipes to deliver water over long distances for twenty five centuries and yet the importance of their dynamic hydraulic behaviour on extending the life cycle of critical assets remains poorly understood. This project has developed a novel architecture for collecting, storing, and analysing the dynamic hydraulic behaviour of water distribution systems. This architecture was used to build an extensive collection of dynamic hydraulic pressure recordings which enabled a wide ranging analysis of the effect of pressure transients upon the performance of distribution system assets. A framework, "Dynamic Data Driven Transient Analysis" (D3TA), was developed to detect network state, transient or non-transient flow conditions, to count transients, and to explore the correlation between dynamic hydraulic behaviour and system failures. The effect of calming networks, removing and minimising transient behaviour, was shown to result in a significant potential reduction in bursts. This project has revealed that the hydraulic conditions in distributions systems are rarely steady state and that hydraulic transients are both frequent and potentially damaging. The algorithms and framework developed in this project have the ability to automatically diagnose and identify network areas at risk of damage as a result of their unsteady-state hydraulic behaviour. This would allow water utilities to proactively identify and repair the sources of hydraulic instabilities in operational networks and maintain "calm" networks, thus reducing costs and extending the working lifetimes of network assets. The results show that in some systems a reduction of the dynamic behaviour could result in a significant (10-20%) reduction in bursts.
Supervisor: Stoianov, Ivan ; McCann, Julie ; Graham, Nigel Sponsor: STREAM Industrial Doctorate Centre
Qualification Name: Thesis (D.Eng.) Qualification Level: Doctoral