This unit appears in the source section of the 1D Water Quality datafile. The unit enables the user to store SOURCE data in files separate from the 1D Water Quality datafile.
Description
The data required by the SOURCE module can be quite extensive, especially if an annual simulation using TIME-HISTORY data is required. Such large amounts of data could make the 1D Water Quality datafile very large and unwieldy for the file editor to handle. For this reason the 1D Water Quality Solver offers the ability to store SOURCE data for a particular node in a separate file. The user is able to store statistical sources, time-history sources and internal boundary conditions. The user retains all the functionality described in the SOURCE section without creating a large 1D Water Quality datafile.
The format of the datafile is set out below, enabling the user to generate the datafile from raw data for the source.
Datafile Format
Line 1 SOURCE
Line 2 USER
Line 3 label
Line 4 USER
Line 5 filename
The separate SOURCE file contains the same information described in the section SOURCE.
The format of the file is described below:
(1) When using the separate datafile to specify data statistically, use:
Line 1 variable name 'Discharge'
Line 2 STATISTICAL'
Line 3 'OUTFALL' or 'INTAKE'
Line 4a-b flwann (l)
Line 5 flwday (l)
Lines 6a-c flwhur (l)
Lines 7a-c varhur(I) (3 lines)
Line 8 annflw
If line 3 is the keyword 'INTAKE', no concentration data is needed so the following line is used:
Line 9 END
Else if line 3 is the keyword 'OUTFALL', the following lines are used:
Line 9 Variable name
Line 10 STATISTICAL'
Line 11 ADDED'
Line 12 ’r;SEASONAL' or 'HOURLY'
If line 12 is the keyword 'SEASONAL' then the following lines are read:
Lines 13a-b pconst(I) (2 lines)
Line 14 END or new variable name
Else if line 12 is the keyword 'HOURLY' then the following lines are read:
Lines 13a-c pconst(I) (3 lines)
Line 14 END or new variable name
(2) When using the separate datafile to set the data as a time-history use:
Line 1 variable name 'Discharge'
Line 2 TIME-HISTORY
Line 3 'DATE', 'SECONDS', 'MINUTES', 'HOURS', 'DAYS', 'WEEKS', 'LUNAR', 'MONTHS', 'YEARS', 'DECADES', or 'MULTIPLIER'
If the keyword 'MULTIPLIER' is used, then the following line is read
Line 3a fmult
Line 4 'INTAKE' or 'OUTFALL'
Line 5 ndat
If the keyword 'DATE' has been used the following line is read 'ndat' times:
Line 6a-end ihour, imin, iday, imonth, iyear, flow
Else if the times are specified differently the following line is read 'ndat' times:
Line 6a-end flow, time
If line 4 is the keyword 'INTAKE', no concentration data is needed so the following line is used:
Line 7 END
Else if line 4 is the keyword 'OUTFALL', the following lines are used:
Line 7 Variable name
Line 8 HISTORY
Line 9 'DATE', 'SECONDS', 'MINUTES', 'HOURS', 'LUNAR', 'MONTHS', 'YEARS', 'DECADES' or 'MULTIPLIER'
If the keyword 'MULTIPLIER' is used, the following line is read:
Line 9a fmult
Line 10 ADDED
Line 11 ndat
If the keyword 'DATE' has been used the following line is read 'ndat' times:
Line 12a - end ihour, imin, iday, imonth, iyear, conc
Line 13 END or new variable name (line 9)
Else if the times are specified differently the following line is read 'ndat' times:
Line 12a - end conc, time
Line 13 END or new variable name (line 9)
(3) When using the SOURCE module to set an internal boundary condition use:
Line 1 Variable name
Line 2 TIME-HISTORY
Line 3 'DATE', 'SECONDS', 'MINUTES', 'HOURS', 'LUNAR', 'MONTHS', 'YEARS', 'DECADES' or 'MULTIPLIER'
If the keyword 'MULTIPLIER' is used, the following line is read:
Line 3a fmult
Line 4 IMPOSED
Line 5 ndat
If the keyword 'DATE' has been used the following line is read 'ndat' times:
Line 6a-end ihour, imin, iday, imonth, iyear, conc
Line 7 END or new variable name
Else if the times are specified differently the following line is read 'ndat' times:
Line 6a-end conc, time
Line 7 END or new variable name
Where
| Field Name | Description |
|---|---|
| SOURCE | Keyword |
| USER | Keyword |
| STATISTICAL | Keyword |
| ADDED | Keyword |
| SEASONAL | Keyword |
| HOURLY | Keyword |
| TIME-HISTORY | Keyword |
| OUTFALL | Keyword |
| INTAKE | Keyword |
| END | Keyword |
| Label | Label of source node |
| Filename | Name of separate SOURCE file |
| flwann | Mean monthly flows for January, February etc |
| flwday | Mean daily flows for Monday, Tuesday etc |
| flwhur | Mean hourly flows for 1:00am, 2:00am etc |
| varhur | Standard deviation from mean for 1.00am, 2.00am etc |
| annflw | Mean annual flow |
| Variable name | Variable name for subsequent concentration data |
| pconst | Concentration of pollutant for January, February etc OR Concentration of pollutant for 1.00am, 2.00am etc (HOURLY) |
| fmult | Multiplier to convert times to hours |
| ndat | Number of data points in discharge hydrograph |
| ihour, imin, iday, imonth, iyear, flow | Time and date, discharge (m3/s) |
| flow, time | Discharge at source node (m3/s), time (secs, mins, hrs etc) |
General
Only one SOURCE may be specified at any one model node. If water quality variables which are not being simulated are specified in SOURCE, then the 1D Water Quality Solver will ignore this redundant information.
Overview
Related Topics