engineered water distribution Articles
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An agent-based modeling framework for sociotechnical simulation of water distribution contamination events
In the event that a contaminant is introduced to a water distribution network, a large population of consumers may risk exposure. Selecting mitigation actions to protect public health may be difficult, as contamination is a poorly predictable dynamic event. Consumers who become aware of an event may select protective actions to change their water demands from typical demand patterns, and new ...
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Study on failure rate analysis for water distribution pipelines
Many of the waterworks facilities in Japan were constructed during the rapid economic growth period. Today, the deterioration and renovation of these aged facilities have become a pressing issue. There are approximately 600,000 km worth of water pipelines laid out across Japan, accounting for about 70% of the nation's water-related assets (totalling ¥40 trillion). To provide water that is safe to ...
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Bayesian modelling for water loss management decisions
Bayesian networks and their associated methods are especially suited for capturing and dealing with uncertainty. They can be successfully applied both in engineering sciences and in reliability analyses of water distribution systems. In this paper we propose an interactive Bayesian network and a decision-theoretic system which intend to monitor water loss, predict likely outcome and select ...
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Integrating evolution strategies and genetic algorithms with agent-based modeling for flushing a contaminated water distribution system
Water utilities can prepare for water distribution hazards, such as the presence of contaminants in the pipe network and failure of physical components. In contamination events, the complex interactions among managers' operational decisions, consumers' water consumption choices, and the hydraulics and contaminant transport in the water distribution system may influence the ...
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A PSO approach for optimum design of dynamic inversion controller in water distribution systems
Water distribution systems have become immensely complex due to ever increasing water demand and sporadic availability of water at the sources. Generally, water management issues are handled through human intervention, which naturally leads to incompetent trial and error procedures. Moreover, the non-linear system dynamics and sequential pumping operations involved in the water distribution ...
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We Need to Talk About Peaking Factors
In the design of water networks ‘peaking factors’ are used for simulating design flows in hydraulic models. In simple terms, the dimensionless peaking factor is maximum over average consumption. Historically, utilities adopted standardized peaking factors based on their source data (treatment plant etc.) which was the most reliable source of data. But as we enter the world of big ...
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Runoff model validation for large–scale afforestation in arid land
As a countermeasure against global warming, large scale afforestation of arid land which is hardly used for crop cultivation has been receiving attention. By large scale afforestation, atmospheric CO2 will be fixed into plants. In arid land, however, most of the rainwater is lost by runoff and evaporation. Effective use of rainwater is required for afforestation. Thus, we made an original runoff ...
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