The storage tanks can be modeled as complete mix, plug flow or two-compartment reactors. The package employs the global reaction rate coefficient which can be modified on a pipe-by-pipe basis. It tracks the reactive material as it spreads, measuring the percentage of flow from the given nodes. This helps to compute pumping energy and cost and then model various types of valves, including shutoffs, check pressure regulating and flow control.ĮPANET's water quality modeling functionality allows users to analyze the movement of a reactive or non-reactive tracer material which spreads through the network over time. The modeling provides information such as flows in pipes, pressures at junctions, propagation of a contaminant, chlorine concentration, water age, and even alternative scenario analysis. The package also supports the simulation of spatially and temporally varying water demand, constant or variable speed pumps, and the minor head losses for bends and fittings. EPANET provides a fully equipped and extended period of hydraulic analysis that can handle systems of any size. Therefore, it is arguably considered as the industry standard.ĮPANET provides an integrated environment for editing network input data, running hydraulic and water quality simulations, and viewing the results in a variety of formats.
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The EPANET ".inp" input file format, which represents network topology, water consumption, and control rules, is supported by many free and commercial modeling packages.
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Its computational engine is used by many software companies that developed more powerful, proprietary packages, often GIS-centric.
ĮPANET 2 is available both as a standalone program and as an open-source toolkit ( Application Programming Interface in C). It performs extended-period simulation of hydraulic and water-quality behavior within pressurized pipe networks and is designed to be "a research tool that improves our understanding of the movement and fate of drinking-water constituents within distribution systems". C Programming Language(engine) / Object Pascal( User Interface)ĮPANET is a public domain, water distribution system modeling software package developed by the United States Environmental Protection Agency's (EPA) Water Supply and Water Resources Division.