Technical Considerations in Numerical Modeling of Pressure Reducing Valves in Water Distribution Systems

by U. S. Panu, Lakehead Univ, Canada,
B. Keenan, Lakehead Univ, Canada,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering


In large water distribution networks, pressure reducing valves (PRVs) are common water appurtenances. However, there are difficulties in representing them when using the Hazen-Williams friction factor in network-analysis models. This paper focuses on such difficulties and suggests a procedure for resolving them through the use of a modified Hazen-Williams friction factor. The effectiveness of the proposed modification in representing PRVs in the WATER model is demonstrated.

Subject Headings: Numerical models | Water supply systems | Hydraulic models | Pressure distribution | Valves | Hydrologic models | Water pressure | Mathematical models

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