Journal ArticleDOI
Pressure Reducing Valves in Pipe Network Analysis
Roland W. Jeppson,Allen L. Davis +1 more
Reads0
Chats0
TLDR
In this paper, three separate systems of equations that are in common use in solving steady flow problems in pipe networks are described and the method for including pressure reducing valves in each of these systems is given The emphasis is on use of efficient computer oriented methods.Abstract:
The three separate systems of equations that are in common use in solving steady flow problems in pipe networks are described and the method for including pressure reducing valves in each of these systems is given The emphasis is on use of efficient computer oriented methods In the method presented the pressure reducing valves are permitted to operate normally in maintaining a constant downstream pressure, or are permitted to act as check valves, preventing reverse flow should downstream pressures exceed valve settings The inclusion of pressure reducing valves as an integral part of the network of pipes, pumps, reservoirs, and minor loss devices causes no appreciable reduction in the performance of computer programs that have been specifically written to carry out the computations for solutionsread more
Citations
More filters
Journal ArticleDOI
A technical note on the inclusion of pressure dependent demand and leakage terms in water supply network models
TL;DR: In this article, a technique for including pressure dependent demand and leakage terms in simulation models for water distribution systems is proposed, which leads to more realistic simulation results when the network pressures are too low to provide specified consumer demands, or high enough to cause significant leakage losses.
Journal ArticleDOI
Pressure-Dependent EPANET Extension
Calvin Siew,Tiku T. Tanyimboh +1 more
TL;DR: In this article, the authors presented an extension of the renowned DDA-based hydraulic simulator EPANET 2 to incorporate pressure-dependent demands, which greatly enhanced the algorithm's convergence rate and robustness.
Journal ArticleDOI
Seamless pressure-deficient water distribution system model
TL;DR: In this paper, the authors present a new pressure-dependent demand function to improve the simulation of pressure-deficient conditions in a water distribution system, which has better computational properties than those in the literature and has been incorporated successfully in the governi...
Proceedings ArticleDOI
The History of Water Distribution Network Analysis: The Computer Age
TL;DR: This paper will attempt to catalog and review those methods that have been developed and applied since the dawn of the “computer age” in 1957 when the original Hardy Cross method was first adapted for solution using a computer in analyzing the water distribution system of the city of Palo Alto, California.
Journal ArticleDOI
Decision support system for water distribution systems based on neural networks and graphs theory for leakage detection
TL;DR: It is shown that the detection of leakages based on the training and testing of the GFMMNN with patterns of variation of nodal consumptions with or without confidence limits produces better recognition rates in comparison to the training based on patterns of nodsal heads and pipe flows state estimates with orwithout confidence limits.