Set how long the simulation runs and how often results are calculated and saved.

• Time analysis mode (Steady state or EPS)

  Choose whether to run a single snapshot or a time-varying simulation.

• Total duration (hh:mm)

  The length of the simulation. For EPS, this is typically 24–48 hours so tanks, pumps, and controls complete a full cycle.

• Hydraulic time step (hh:mm)

  How often the hydraulic state of the network is recalculated. Smaller steps capture faster system changes but increase run time.

• Reporting time step (hh:mm)

  How often results are written to the outputs.

• Pattern time step (hh:mm)

  The interval between demand (and other) pattern values.

Typically the hydraulic, reporting and pattern time step are set to the same duration.