Setup Water Quality

Mixing Parameters:

Total Fluid Run Time [__] minutes - defines the time interval between runs of the Fluid Flow application, which generates the current flow conditions for mixing and reaction calculations.  
 

Mixing Time Step [__] seconds - defines the time interval between successive Water Quality mixing calculations for constituent concentrations in the system based on transport mixing or injections occurring at junctions, tanks, etc.  The mixing calculations update concentrations using results from the latest runs of Fluid Flow and Water Quality Reaction.
 

Reaction Time Step [__] minutes - defines the time interval between successive Water Quality Reaction calculations for constituent concentrations in the system based on bulk and wall chemical reactions.  The reaction calculations update concentrations using results from the latest runs of Fluid Flow and Water Quality Mixing.  This interval establishes the time span for which the Reaction results are assumed valid for Water Quality mixing calculations.
 

• Use Previous Mixing Data - directs application to use the last saved results as the starting point for the current run of application, instead of the defined initial conditions (from Constituent Settings dialog).  
   

Reaction Parameters:

Bulk Decay Coefficient - defines the global bulk decay coefficient, used for Chlorine decay calculations unless a local override value has been defined.
 

Wall Decay Coefficient - defines the global wall decay coefficient, used for Chlorine decay calculations unless a local override value has been defined.  
 

Bulk Scaling Factor - default value for local bulk scaling factors, used for local adjustments of the global bulk decay coefficient.
 

Wall Scaling Factor - default value for local wall scaling factors, used for local adjustments of the global wall decay coefficient.
 

Output Options:

XML Output:

• Save output to XML File - application saves system status and results to an XML file, allowing them to be used as initial conditions for a subsequent run.
   

• Restart using historical XML data - application retrieves saved XML data and uses retrieved conditions to initialize current run.

Report Options:
 

• Generate a Report - when selected, application generates Water Quality report for results of run. (See Water Quality Sample Report)
   

Initial Values and Operating Limits:

[Constituent Settings] - opens the Constituent Control dialog, which allows user to define initial values and operating ranges for applicable water quality parameters.

Common Commands:

[OK] - accepts setup changes and exits dialog.

[Cancel] - exits dialog without implementing changes.