What you will achieve
- Run an extended period simulation.
- Connect the same reported time across the chart and other views.
Step-by-step tutorial
How to analyze an EPANET extended period simulation
Run a 24-hour simulation and connect the active time with the time series, map, properties, and table.
Before you start
- Load an EPANET model with simulation duration and time steps defined.
- Confirm the unit system and keep the original file.
Review duration and time steps
Open extended period simulation settings and check the model's duration, hydraulic time step, and reporting interval. A 24-hour duration can include both the initial 00:00 result and the final 24:00 result.
- Do not confuse duration with the number of samples.
- Use reported model times rather than deriving a clock time from the frame index.
Run and select an element
Run the simulation and select a junction whose pressure head changes clearly. Open its time series and read the quantity and unit before comparing times.
- Verify the junction ID.
- A calculated curve describes the model and its assumptions; it is not an operational forecast by itself.
Always compare the same reported time
Stop at one time and confirm that the chart marker, timeline, map, properties, and table all refer to that instant. Repeat at other times to recognize the variation.
Do it in WatDis
- Run a 24-hour simulation.
- Select a junction and visit three reported times.
- Confirm the same time and unit in the time series, map, and table.
Common mistakes
Comparing different times
Confirm the active instant on every surface before attributing a difference to the model.
Presenting the curve as a forecast
Interpret results together with the input data, patterns, and assumptions.