APPLICATION OF PRESSURE-DEPENDENT EPANET EXTENSION

摘要

Several hydraulic modelling approaches have been proposed previously to simulate pressure deficient operating conditions in water distribution systems more realistically including the pressure dependent EPANET extension model EPANET-PDX that has an embedded logistic nodal head-flow function. The model has been extensively tested previously on benchmark as well as real life networks. In this article, we demonstrate an alternative implementation of the line search and backtracking procedure to enhance EPANET-PDX further. This has increased the robustness by enhancing greatly the computational properties for low flow conditions and increasing the algorithm's consistency over a wider range of operating conditions. We present results for extended period simulations of a real life network considering pipe closures and variations in the heads at the supply nodes.