Author(s)

H. Rahal

Abstract

Water distribution network steady state simulation AQUANET model H. Rahal Laboratory of Hydraulics, K. U. Leuven, de Croylaan 2, B-3001 Heverlee, Belgium ABSTRACT This article is devoted to the description of the algorithm upon which the steady state simulation model AQUANET has been developed. This algo- rithm solves the nonlinear system of the continuity and the loop equations formulated in terms of the link flows, using the Newton-Raphson iterative procedure. To ensure fast convergence, the initial solution is determined using an extended version of the linear method. The state of the art graph theory concepts were used to generate the fundamental circuits (or loops). To take into account, the pipes various types of material and ages, the model allows the use of the most used head loss equation for each pipe link. Among these head loss equations, the Darcy-Colebrook can be used with- out any trade-off, because of the efficient procedure developed to ensure the fastest conv

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