Schedule Hydraulic Run View (SWMM)

The name of the run.

If the entered title already exists, exclamation marks (!) will be appended to the run name until a unique name is created.

If a title is not entered, a unique title of the form r0000012 will be generated for you.

Select an SWMM network by using one of the following methods:

• Drag and drop a SWMM network from the Explorer window tree.
• Click Browse , select a SWMM network from the displayed tree and click OK.
• Click Select version to display the Select Commit dialog. Click an entry in the dialog and click OK to select a version of the network currently selected in the SWMM network box.

If the network contains uncommitted changes, the most recently committed version of the network will be used when running the simulation.

A simulation can not be carried out if the network has not been validated.

A red border around this button indicates that there is a more recent committed version of the selected SWMM network available.

Click Update to latest to update the selected SWMM network to the most recent committed version.

If the currently selected SWMM network has scenarios, the scenarios will be displayed in the Scenarios box.

Check the scenarios for which simulations are to be run.

To select multiple scenarios, use the CTRL or SHIFT keys. Click on the check box of one of the selected scenarios to set the status of the check boxes of all selected scenarios.

A dropbox for a SWMM simulation that is to be used as the initial state for this simulation.

A network state from a previous simulation can be used as the initial state for the first simulation in the current run by dragging an existing simulation (for which state information was saved) into the box.

Indicates whether or not live data from external sources (e.g. SCADA/telemetry or RADAR data) is to be used in the simulation. Unchecked (external data not used) by default

Displayed when the Use TSDB option is checked.

A dropbox for time series database / spatial time series database on which the simulation is to be based. More than one database can be selected and the Simulation Controller will use the databases in the order they appear in the box (the time series database at the top will be used first).

Displayed when the Use TSDB option is checked.

Opens the TSDB Options dialog allowing you to configure the user edits for use for the simulation.

Displayed when the Use TSDB option is unchecked.

A dropbox for the rainfall events or flow surveys on which the simulation is to be based

More than one rainfall event can be selected by dragging a Model Group to add all rainfall events that are within that group. Rainfall events within sub-groups will not be added.

If more than one rainfall event is selected, the Simulation Controller will run a separate simulation for each rainfall event.

If you wish to run a dry weather simulation, then a rainfall event should not be included in this dropbox.

Enabled when the Use TSDB option is unchecked.

When running a simulation with rainfall event/flow survey data, dropboxes for time varying events other than rainfall may also be selected, if required.

Multiple SWMM Pollutographs may be chosen but only one time varying event of the type Level, Inflow and Regulator may be selected.

Note

If a SWMM Pollutograph has been selected that has a Units factor set for a pollutant in its profile properties and the same pollutant also has a Mass units factor set for it in the same node's pollutant inflow property, and both factors are set to a value other than 1, then both factors will be applied to the relevant pollutant inflow values for the applicable node during a simulation.
A message will be included in the simulation log file that provides the name of the node and SWMM Pollutograph for which a units factor has been applied twice.

Indicates whether or not an internally computed variable time step is to be used at each routing time period.

If checked, the value (%) that is to be used as the adjustment factor for the timestep can be specified in the adjacent field.

The variable time step is computed so as to satisfy the Courant condition within each conduit, and to prevent an excessive change in water depth at each node. A default adjustment factor of 75% is provided which allows for some margin of conservatism.

The computed variable time step will not be less than the specified Minimum timestep nor be greater than the fixed time step specified on the Timstep Control dialog.

This option is checked by default.

The value of the smallest timestep allowed when variable time steps are used. The default is 0.5 seconds.

Smaller timesteps may be used but this may lead to longer simulation runs with little improvement in solution quality.

The value of the timestep, in seconds, used to artificially lengthen conduits so that they meet the Courant stability criterion under full-flow conditions (i.e., the travel time of a wave will not be smaller than the specified conduit lengthening time step).

As this value is decreased, fewer conduits will require lengthening. A value of zero means that no conduits will be lengthened.

The roughness value of the conduit will also be artificially lowered so that the same velocity and flow are maintained after lengthening. Also note that the conduit slope reported in the output will reflect a numerically smaller slope due to a longer conduit length.

The ratio of the artificial length to the original length for each conduit is listed in the Flow Classification table that appears in the simulation's Summary Report.

A dropbox for a selection list containing the objects of interest within the network that a report is to be generated for. Detailed time series results will be saved to the selected reports for viewing after a simulation has been run.

The following object types can be reported:

• Nodes
• Links
• Subcatchments

If checked, the statistical summary of continuity results will be included in the output text report. Checked by default.

If checked, input data will be included in the output text report. Unchecked by default.

Indicates whether or not average results for nodes and links are to be reported in the output text report.

If checked, time series results for nodes and links will be reported as average values computed over a reporting time step. If unchecked, the results will be interpolated point values at the end of the reporting time step. Unchecked by default.

Displays the Timestep Control dialog which is used to define the:

• start and end dates/times of a simulation
• length of the time steps used for runoff computation, routing computation and results reporting, as well as identifying periods of time when the hydraulic network is considered to be in a steady flow

Displays the Options dialog which is used to set up the processing options and surcharge methods which are to be used for a SWMM run.