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 which is consistent with the hydraulic principles and the specific working condition.

Demand Components in Water Distribution Network Analysis / Giustolisi, Orazio; Walski, T. M.. - In: JOURNAL OF WATER RESOURCES PLANNING AND MANAGEMENT. - ISSN 0733-9496. - 138:4(2012), pp. 356-367. [10.1061/(ASCE)WR.1943-5452.0000187]

Demand Components in Water Distribution Network Analysis

GIUSTOLISI, Orazio;
2012-01-01

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 which is consistent with the hydraulic principles and the specific working condition.
2012
Demand Components in Water Distribution Network Analysis / Giustolisi, Orazio; Walski, T. M.. - In: JOURNAL OF WATER RESOURCES PLANNING AND MANAGEMENT. - ISSN 0733-9496. - 138:4(2012), pp. 356-367. [10.1061/(ASCE)WR.1943-5452.0000187]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/2569
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