Extended Period Simulation for Pressure-Deficient Water Distribution Network

• Published in: Journal of computing in civil engineering Vol. 26; no. 4; pp. 498 - 505
• Main Authors: Jinesh Babu, K. S, Mohan, S
• Format: Journal Article
• Language: English
• Published: Reston, VA American Society of Civil Engineers 01.07.2012
• Subjects: Algorithms; Applied sciences; Buildings. Public works; Computation methods. Tables. Charts; Computational fluid dynamics; Computer simulation; Distribution. Storage; Exact sciences and technology; Networks; Packages; Solvers; Structural analysis. Stresses; Technical Papers; Water distribution; Water engineering; Water supply. Pipings. Water treatment; Demand-driven algorithm; Water distribution systems; Water supply; Water distribution; Pipe failure; Algorithm; Modeling; Pressure; Water supply system network; Failures; Pressure-deficient analysis; Pump; Case study; Water pipelines; Pump failure; Algorithms; Pumps; Failure analysis; Water pipe; Example; Water supply systems; Simulation model; Water distribution network
• ISSN: 0887-3801; 1943-5487
• DOI: 10.1061/(ASCE)CP.1943-5487.0000160

AbstractA water distribution network is said to be under pressure-deficient condition when hydraulic-head or pressure-head at any of its nodes fall below the required level. The demands at these pressure-deficient nodes cannot be fully satisfied. To make the analysis simple, it is generally assumed that the demand is fully satisfied irrespective of the pressure-head available and this approach is referred as demand-driven analysis. For simplicity, demand-driven analysis received great attention in the past and several computer packages are readily available for the analysis of normal operational water distribution network. On the other hand, head-driven or pressure-driven analysis could be effectively used to analyze the pressure-deficient condition as these methods consider the head-discharge relationship at every node. This paper presents a pressure-deficient analysis algorithm using the widely used demand-driven analysis-based solver. The proposed algorithm is validated through benchmark water distribution network and then extended period simulation is carried out for a multiple source pumped network. The analysis shows that the proposed algorithm could find the partial nodal outflows and corresponding hydraulic-head values in a single hydraulic simulation run.