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CE 3372 Water Systems DesignIntroduction to US EPA-NET
Objectives
Review of Lecture 4
Introduction to EPANET Install on (PC/Mac)Example problem (from last time) on EPANET
Workshop Example problems
Exercise Set 3 (EPANET problems)
REVIEW
Water Supply System
Distribution Network
Pressure
Network Layout
REVIEW
REVIEW
Distribution network - Consists of items designed to convey potable water at adequate pressures and discharges
Tanks
Pumps
Pipes
Valves
Fittings
Meters
Other appurtenences
EPA-NET
Computer program that simulates flow in closed conduit (pressurized) systems
NodesLinks (pipes, pumps, valves)Reservoirs (reservoir, tanks)Demand schedule (extended period simulation)
Getting the Program
Download and install EPA-NETPC Users – Google EPANET MAC Users – Use the class website
Download and PRINT the user manualTopology constructed in a GUILengths, diameters, friction terms entered for each component (pipe, valve)Demand entered for each node (+ outflow, - inflow)
Getting the Documentation
Download and PRINT the user manualEPANET website, or class website.
Topology constructed in a GUILengths, diameters, friction terms entered for each component (pipe, valve)Demand entered for each node (+ outflow, - inflow)
About the program
Topology (Network Layout) is constructed in a GUI
Nodes
Demand entered for each node (+ outflow, - inflow)
Links
Lengths, diameters, friction terms entered for each component.
Pipes, Pumps, Valves are all “link” components
Reservoir/TankAll models need a reservoir (like the ground in an electric circuit)
Stuff you Have to Choose
Head Loss ModelsDarcy-WeisbachHazen-WilliamsChezy-Mannings
Flow units (CFS, GPM, CMS and such)Select SI or US Customary before building a modelThe program does not convert units.
WorkshopInstall
Example 1 – Single pipeline
Example 2 – Flow between two reservoirs
Example 3 – Three reservoir (branched)
Example 4 – Two reservoir, 4 pipes (loop)
Example 5 – Lifting with a pump
Installing• Get the software from
• http://cleveland2.ce.ttu.edu/teaching/ce3372/Programs/
• Or from the flash drive passed around class for the Mac OSX users.
Example 1• Single pipeline
Example 2• Example 2 – Flow between two reservoirs
Example 3• Example 3 – Three reservoir (branched)
Example 4• Example 4 – Two reservoir, 4 pipes (loop)
Example 5• Example 5 – Lifting with a pump