The Junctions tab contains a summary table, which is displayed when the Junctions parent node is selected in the selection tree, and editable tables for each junction, which can be accessed by selecting the junction name from the selection tree (Initial Conditions Set Editor – Junctions Tab – Edit Junction) in the linked geometry dataset. For example, the junction names defined in the linked geometry (GeometryData1) appear in the selection tree (located in the selection panel of the editor). The selected junction, Austin Ck Conf, is displayed and available for editing in the data panel.
When the Initial Condition Set Editor is opened from the Water Quality module, the Junctions tab in the editor will only display the junctions that are part of the linked Geometry dataset. Additionally, the Value column in the data panel's junction table will initially be empty until the user enters data.
Initial Conditions Set Editor – Junctions Tab – Edit Junction
However, if the Initial Condition Set Editor is opened from the Simulation module (refer to Chapter 14), the list of junctions in the Junctions tab will display not only the junctions from the linked Geometry dataset but also those listed in the Boundary Conditions Set (refer to Chapter 8) and the Observed Dataset (refer to Chapter 7) selected in the Alternative Editor (see Chapter 13 for more details). In addition, when accessed from the Simulation module, the Value column will display the boundary condition value, and the user will have the option to enter a value in the Override Value column. Values entered in the Override Value column will replace the original initial value for the constituent during the simulation run. If no override value is provided, the boundary condition value will be used during the simulation.
To enter override values for the constituent's initial conditions:
From the Initial Condition Set Editor, navigate to the Junctions tab. In the selection tree, select the junction name of interest (e.g., Austin Ck Conf). The data panel will update to display an editable table for entering and overriding the constituent's initial values.
To enter an Override Value for a constituent, select an individual cell in the Override Value column and type in the desired value. This will replace the original initial value for the specified constituent(s).
Users can also copy (using the Ctrl+C command) and paste (using the Ctrl+V command) values from an external source (e.g., Microsoft Excel® or a text editor) into the table. This can be done using the keyboard shortcuts or by right-clicking a cell to access the shortcut menu.
Continue selecting different junctions in the selection tree (Initial Conditions Set Editor – Junctions Tab – Edit Junction) and enter Override Values for constituents as needed. Remember, junctions without an override value will use the boundary condition values or observed dataset values selected in the Alternative Editor during the simulation run.
To save the changes to the initial conditions set, click Apply. Alternatively, if you have finished working in the editor, click OK to close the Initial Condition Set Editor and save your changes.