Top of Page Modeling Capabilities With EPANET, users can perform extended-period simulation of the hydraulic and water quality behavior within pressurized pipe networks, which consist of pipes, nodes junctions , pumps, valves, storage tanks, and reservoirs. It can be used to track the flow of water in each pipe, the pressure at each node, the height of the water in each tank, a chemical concentration, the age of the water, and source tracing throughout the network during a simulation period. Various data reporting and visualization tools are used to assist in interpreting the results of a network analysis, including color-coded network maps, data tables, energy usage, reaction, calibration, time series graphs, and profile and contour plots. Full-featured and accurate hydraulic modeling is a prerequisite for doing effective water quality modeling. EPANET contains a state-of-the-art hydraulic analysis engine that includes the following capabilities: System operation based on both simple tank level or timer controls and on complex rule-based controls. No limit on the size of the network that can be analyzed.
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Features[ edit ] EPANET provides an integrated environment for editing network input data, running hydraulic and water quality simulations, and viewing the results in a variety of formats. EPANET provides a fully equipped and extended period of hydraulic analysis that can handle systems of any size. 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.
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.
This helps to compute pumping energy and cost and then model various types of valves , including shutoffs, check pressure regulating and flow control. It rates the reactive material as is grows, tracks the percentage of flow from the given nodes.
The package employs the global reaction rate coefficient which can be modified on a pipe-by-pipe basis. The storage tanks can be modeled as complete mix, plug flow or two-compartment reactors. The visual network editor of EPANET simplifies the process of building piping network models and editing their properties.
These various types of data reporting visualization tools are used to assist to analyze the networks, which include the graphics views, tabular views, and special reports. Head-flow Curves of Pumps[ edit ] Within EPANET, pumps are modeled using a head-flow curve, which defines the relationship between hydraulic head imparted to the system by the pump and flow conveyed by the pump.
The model calculates the flow conveyed by the pump element for a given system head condition based on this curve. EPANET can also model a pump as a constant power input, effectively adding a given amount of energy to the system downstream of the pump element.
Water-quality simulation[ edit ] EPANET includes the capability to model water age and predict flow of non-reactive and, under simplified conditions, reactive materials.
While the internal water quality simulation capabilities only evaluates decay or growth of a single constituent, an extension is available EPANET-MSX , which allows modeling of interactions between constituents.
EPANET 2 Toolkit