WQ Turbidity Profile page

Allows viewing and editing of a turbidity profile for nodes at which water can enter the system. See Water Quality - Turbidity Analysis for details.

For more information on all node types, see Nodes. For more general information on controls, see Control Data.

Turbidity Grid

There are two ways to set up the turbidity level for a node:

• Use the Initial Turbidity field to set a turbidity value that is applied at the start of the simulation.
• Use the grid to enter a series of variable turbidity values at the node for the simulation.

Please Note

If both an  Initial Turbidity and a series of time dependent turbidity values have been entered, the time dependent turbidity values take precedence.

By default no interpolation is used between data points. Each turbidity value entered in the grid is maintained until the next date / time entry, or until the end of the simulation. Check the Linear Turbidity Profile box for linear interpolation to be used between data points.

The following options are available for extending the profile outside of the entered dates / times:

Data Field	Description
Before First Point	Option Description Extend Back The first value in the grid is extended back to the start of the simulation (and to the start of the repeat period for repeated profiles). Extrapolate Back Applies to Linear Profiles only: the first two values in the grid are used to extrapolate back to the start of the simulation (and to the start of the repeat period for repeated profiles). Please Note If Extrapolate Back is selected for a non linear profile, the profile will be extended back. Zero/Unchanged A value of zero or "off" is applied from the start of the simulation until the date / time of the first value in the grid (and from the start of the repeat period for repeated profiles).
After Last Point	Option Description Extend Forward The last value in the grid is extended to the end of the simulation or repeat period. Extrapolate Forward Applies to Linear Profiles only: the last two values in the grid are used to extrapolate forward to the end of the simulation or repeat period. Please Note If Extrapolate Forward is selected for a non linear profile, the profile will be extended forward.
Repeat Profile Checkbox	Check the Repeat Profile box to repeat a profile (from 00:00 for the selected Repeat Period) for the duration of the simulation. IMPORTANT When using the Repeat Profile option; if the defined profile spans over the selected Repeat Period, the profile will not be repeated.
Repeat Period	Profile period which will be repeated throughout simulation, if the Repeat Profile box is checked.

Turbidity Source Type

The Source Type determines the method by which the profile defined in the Turbidity Grid is applied to the network during a Water Quality simulation.