EPANET Model’s Easy Data Import for Surge Transient Analysis

Pump Startup, Shutdown and Trips, Valve Action, Hydrant Operations and All Types of Surge Protection Devices
EPA-Surge is a powerful transient analysis wizard included with the Surge software. This new feature was designed specifically for EPANET users, allowing them to easily perform transient analysis on EPANET models without re-entering data. Using a working EPANET file, the wizard defines a piping system and the initial conditions for a transient analysis. The transient event can be the action of a valve, a pump or both.

This simple wizard transfers EPANET data into a surge model with only four quick steps. Surge control devices and events can be specified and the results can be displayed in tables, graphs, contours and animations. Download the free demo and try this new feature: the EPA-Surge demo is included in the free KYPipe demo.
Four Simple Steps to Analyze Transients in an EPANET Model

Step One: Prepare Baseline EPANET File
The EPANET file should define a single initial condition for transient analysis. This involves setting the following parameters:

  • Reservoir and tank levels.
  • Demands.
  • Pump status (on/off) and speed ratio.
  • Valve status (on/off) and settings.
  • Regulator settings.
Step Two: Load EPANET (.inp) File and Start Wizard
Generate an .inp from EPANET's file menu (File | Export | Network).
Step Three: Complete Four Surge Wizard Tasks
  • Set wave speed.
  • Set demands and demand options.
  • Insert surge protection devices.
  • Modify baseline data using the Operational Control Screen (OCS*).
    *OCS displays and provides the capability to modify the following settings: 1) Tank and reservoir levels and on/off switches, 2) Pump on/off status, initial speed ratio and the number of pumps operating when multiple pumps are present, 3) Valve on/off status, type and initial setting, and 4) Regulator settings.
Step Four: Run the Analysis
Final Results:

  • Steady State.
  • Surge.