The hydraulic reliability of a water distribution network is usually referred to as the inability to supply required water demands due to variations of some hydraulic parameters, such as pipe hydraulic resistance and/or required demands. This undermines the application of conventional deterministic approach to modeling water distribution networks when used for the network reliability analysis, calling for the assumption of uncertainty scenarios for nodal demands and/or pipe roughness. The paper deals with a stochastic approach for simulation of nodal demands uncertainty and the presence of leakages. The reliability analysis will be performed via demand-driven and pressure-driven hydraulic simulation using the Apulian network, whereas pipe diameters have been sized by means of a least cost design procedure. The analysis highlights the difference in hydraulic reliability assessment according to the use of hydraulic simulation model, showing that pressure-driven approach is mandatory for an accurate network hydraulic reliability investigation.

Hydraulic reliability analysis using a pressure-driven network simulation model

Laucelli, DB;Giustolisi, O;Doglioni, A
2010-01-01

Abstract

The hydraulic reliability of a water distribution network is usually referred to as the inability to supply required water demands due to variations of some hydraulic parameters, such as pipe hydraulic resistance and/or required demands. This undermines the application of conventional deterministic approach to modeling water distribution networks when used for the network reliability analysis, calling for the assumption of uncertainty scenarios for nodal demands and/or pipe roughness. The paper deals with a stochastic approach for simulation of nodal demands uncertainty and the presence of leakages. The reliability analysis will be performed via demand-driven and pressure-driven hydraulic simulation using the Apulian network, whereas pipe diameters have been sized by means of a least cost design procedure. The analysis highlights the difference in hydraulic reliability assessment according to the use of hydraulic simulation model, showing that pressure-driven approach is mandatory for an accurate network hydraulic reliability investigation.
10th International Conference on Computing and Control for the Water Industry, CCWI
978-0-415-54851-9
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/14529
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