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Bifurcation Water Quality
Water Quality
Bifurcation Water Quality
The bifurcation has water quality methods simply to pass information upstream or downstream.
Slots
The following slots are instantiated based on the selected constituents
Note:  All slots on the bifurcation are dispatch slots.
Salinity Slots
Inflow Salt Concentration
Type: Multi Slot
Units: Concentration
Description: holds the values of inflow salinity for the bifurcation
Information: There should be one link/column per column in the Inflow slot (or an error is posted at run start). Because this slot is a multi slot, more than one link can be created to this slot which will add columns to the slot. The first column is the sum of the other columns but does not represent the inflow concentration. The dispatch methods perform a weighted average to determine the weighted concentration, but this is not displayed in the slot.
I/O: Input, output, propagated, or rules
Inflow Salt Mass
Type: Series Slot
Units: Mass
Description: holds the values of inflow salt mass for the bifurcation
I/O: Output only
Outflow1 Salt Concentration
Type: Series Slot
Units: Concentration
Description: holds the values of Outflow1 salt mass for the bifurcation
I/O: Output only
Outflow1 Salt Mass
Type: Series Slot
Units: Mass
Description: holds the values of Outflow1 salt mass for the bifurcation
I/O: Output only
Outflow2 Salt Concentration
Type: Series Slot
Units: Concentration
Description: salinity of Outflow2 from the bifurcation
I/O: Output only
Outflow2 Salt Mass
Type: Series Slot
Units: Mass
Description: salinity of Outflow2 from the bifurcation
I/O: Output only
Temperature Slots
Inflow Heat
Type: Series Slot
Units: Heat
Description: holds the values of heat for the inflow
I/O: Required Known via input, rules, or propagated
Outflow1 Heat
Type: Series Slot
Units: Heat
Description: holds the values of Ouflow1 heat
I/O: Output only
Outflow2 Heat
Type: Series Slot
Units: Heat
Description: holds the values of Ouflow2 heat
I/O: Output only
Dissolved Oxygen Slots
Inflow Detritus Mass
Type: Series Slot
Units: Mass
Description: holds the values of inflow detritus mass
I/O: Required Known via input, rules, or propagated
Inflow Dissolved Organics Mass
Type: Series Slot
Units: Mass
Description: holds the values of inflow dissolved organics mass
I/O: Required Known via input, rules, or propagated
Inflow Ammonia Mass
Type: Series Slot
Units: Mass
Description: holds the values of inflow ammonia mass
I/O: Required Known via input, rules, or propagated
Inflow Dissolved Oxygen Mass
Type: Series Slot
Units: Mass
Description: holds the values of inflow dissolved oxygen mass
I/O: Required Known via input, rules, or propagated
Outflow1 Detritus Mass
Type: Series Slot
Units: Mass
Description: holds the values of Outflow1 detritus mass
I/O: Output only
Outflow1 Dissolved Organics Mass
Type: Series Slot
Units: Mass
Description: holds the values of Outflow1 dissolved organics mass
I/O: Output only
Outflow1 Ammonia Mass
Type: Series Slot
Units: Mass
Description: holds the values of Outflow1 ammonia mass
I/O: Output only
Outflow1 Dissolved Oxygen Mass
Type: Series Slot
Units: Mass
Description: holds the values of Outflow1 dissolved oxygen mass
I/O: Output only
Outflow2 Detritus Mass
Type: Series Slot
Units: Mass
Description: holds the values of Outflow2 detritus mass
I/O: Output only
Outflow2 Dissolved Organics Mass
Type: Series Slot
Units: Mass
Description: holds the values of Outflow2 dissolved organics mass
I/O: Output only
Outflow2 Ammonia Mass
Type: Series Slot
Units: Mass
Description: holds the values of Outflow2 ammonia mass
I/O: Output only
Outflow2 Dissolved Oxygen Mass
Type: Series Slot
Units: Mass
Description: holds the values of Outflow2 dissolved oxygen mass
I/O: Output only
User Methods
The following section describes the user-selectable methods for water quality modeling on the Bifurcation.
Bifurcation Water Quality
Methods in this category are used to select the constituent and approach.
* None
No water quality solution is performed. No slots are added.
* Propagate Salt
All of the salt slots are added and the Solve Salt dispatch method is made available.
* Propagate Temperature
All of the temperature slots are added and the Solve Temp dispatch method is made available.
* Propagate Temp and Salt
All of the temperature and salt slots are added. This method makes the Solve Temp and Salt dispatch method available.
* Propagate Temp and DO
All of the temperature and DO slots are added. This method makes the Solve Temp and DO dispatch method available.
* Propagate Temp Salt and DO
All of the temperature, salt and DO slots are added. This method makes the Solve Temp Salt and DO dispatch method available.
Dispatch Methods
Following are the dispatch methods.
* Solve Temp
This dispatch method is available for the Propagate Temperature method.
Required Known slots
• Inflow
• Outflow1
• Inflow Heat
• Outflow2
Required Unknown slots
• Outflow1 Heat
• Outflow2 Heat
Method Details
This method simply distributes heat associated with Inflow to the two outflows. If Inflow is 0, the two outflow heats are zero. Otherwise:
(5.1)    
(5.2)    
* Solve Salt
This dispatch method is available for the Propagate Salt method.
Required Known slots
• Inflow
• Outflow1
• Inflow Salt Concentration
• Outflow2
Required Unknown slots
• Outflow1 Salt Concentration
• Outflow2 Salt Concentration
Method Details
This method simply distributes salt associated with Inflow to the two outflows. If Inflow is 0, the two outflow salt masses are zero. Otherwise:
(5.3)    
(5.4)    
Outflow 1 and Outflow 2 Salt Concentrations are set to Inflow Salt Concentration (unless the flow is 0, then the concentration is 0 as well).
* Solve Temp and Salt
This dispatch method is available for the Propagate Temp and Salt method.
Required Known slots
• Inflow
• Outflow1
• Inflow Heat
• Outflow2
• Inflow Salt Concentration
Required Unknown slots
• Outflow1 Heat
• Outflow2 Heat
• Outflow1 Salt Concentration
• Outflow2 Salt Concentration
Method Details
This method simply distributes heat and salt associated with Inflow to the two outflows. If Inflow is 0, the two outflow heats and salt masses are zero. Otherwise:
(5.5)    
(5.6)    
(5.7)    
(5.8)    
Outflow 1 and Outflow 2 Salt Concentrations are set to Inflow Salt Concentration (unless the flow is 0, then the concentration is 0 as well).
* Solve Temp and DO
This dispatch method is available for the Propagate Temp and DO method
Required Known slots
• Inflow
• Inflow Dissolved Oxygen Mass
• Inflow Ammonia Mass
• Inflow Heat
• Inflow Detritus Mass
• Outflow1
• Inflow Dissolved Organics Mass
• Outflow2
Required Unknown slots
• Outflow1 Detritus Mass
• Outflow2 Detritus Mass
• Outflow1 Heat
• Outflow2 Heat
• Outflow1 Ammonia Mass
• Outflow2 Ammonia Mass
• Outflow1 Dissolved Organics Mass
• Outflow2 Dissolved Organics Mass
• Outflow1 Dissolved Oxygen Mass
• Outflow2 Dissolved Oxygen Mass
Method Details
This method simply distributes heat and DO masses associated with Inflow to the two outflows. If Inflow is 0, the two outflow heats and DO masses are zero. Otherwise:
(5.9)    
(5.10)    
(5.11)    
(5.12)    
(5.13)    
(5.14)    
(5.15)    
(5.16)    
(5.17)    
(5.18)    
* Solve Temp Salt and DO
This dispatch method is available for the Propagate Temp Salt and DO method
Required Known slots
• Inflow
• Inflow Heat
• Inflow Ammonia Mass
• Inflow Salt Concentration
• Inflow Dissolved Oxygen Mass
• Outflow1
• Inflow Detritus Mass
• Outflow2
• Inflow Dissolved Organics Mass
Required Unknown slots
• Outflow1 Ammonia Mass
• Outflow2 Ammonia Mass
• Outflow1 Detritus Mass
• Outflow2 Detritus Mass
• Outflow1 Dissolved Organics Mass
• Outflow2 Dissolved Organics Mass
• Outflow1 Dissolved Oxygen Mass
• Outflow2 Dissolved Oxygen Mass
• Outflow1 Heat
• Outflow2 Heat
• Outflow1 Salt Concentration
• Outflow2 Salt Concentration
Method Details
This method simply distributes heat, salt, and DO masses associated with Inflow to the two outflows. If Inflow is 0, the two outflow heats, salt mass, and DO masses are zero. Otherwise:
(5.19)    
(5.20)    
(5.21)    
(5.22)    
(5.23)    
(5.24)    
(5.25)    
(5.26)    
(5.27)    
(5.28)    
(5.29)    
(5.30)    
Outflow 1 and Outflow 2 Salt Concentrations are set to Inflow Salt Concentration (unless the flow is 0, then the concentration is 0 as well).
 
Revised: 06/03/2019