ID:
publications-4244
Type:
article
Year:
2012
Authors:
Giustolisi, Orazio and Giustolisi, Orazio and Walski, Tom and Walski, Thomas M.
Title:
Demand Components in Water Distribution Network Analysis
Venue/Journal:
Journal of Water Resources Planning and Management
DOI:
10.1061/(asce)wr.1943-5452.0000187
Research type:
Water System:
Technical Focus:
Abstract:
Solving water distribution network hydraulics depends to a great extent on demand representation in the related simulation models. The classical approach of simulation models for water distribution networks (WDNs) is described as demand-driven. The demands are fixed a priori in the model as an assumption or from field observations. Recently a more realist approach to predict the hydraulic system behavior, described as head/pressure-driven, better accounts for the fact that the demands depend in some ways on head status of the network. Thus, this paper presents a comprehensive view of demands in the enhanced WDN simulation models, including considerations of human- based, volume-based, uncontrolled orifice-based, and leakage-based demands as distinct types of network outflows. The paper proposes and discusses the representation of each type of demand in a comprehensive framework that is consistent with the hydraulic principles and the specific working condition. DOI: 10.1061/(ASCE)WR.1943-5452.0000187. Β© 2012 American Society of Civil Engineers. CE Database subject headings: Water distribution systems; Water demand; Algorithms; Simulation models. Author keywords: Water distribution networks; Water demands; Water network simulation; Global gradient algorithm; Pressure-driven analysis; Head-driven analysis.
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