Demand Components in Water Distribution Network Analysis

作者：Giustolisi O^*; Walski T M

来源：Journal of Water Resources Planning and Management, 2012, 138(4): 356-367.

DOI：10.1061/(ASCE)WR.1943-5452.0000187

• Water distribution networks
• Water demands
• Water network simulation
• Global gradient algorithm
• Pressure-driven analysis
• Head-driven analysis

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.

• 出版日期2012-8