* SPECIAL CONTROL SYMBOLS NOW CONTROL THE SWMM INPUT FILE
* THE SPECIAL SYMBOLS ARE '*', '@', AND '$'.
* * ---> COMMENT LINE
* @ ---> SAVE A FILE PERMANENTLY OR USE A SAVED FILE
* $ ---> CALL A SWMM BLOCK
* THE FIRST LINE CONTAINS THE NUMBER OF BLOCKS TO BE RUN AND
* THE JIN AND JOUT INTERFACE FILE UNIT NUMBERS.
* (NOTE THAT A SECOND BLOCK IS NOT RUN IN THIS EXAMPLE.)
* NBLOCK JIN(1) JOUT(1) JIN(2) JOUT(2)
SW 2 0 10 10 0
* THE SECOND LINE CONTAINS UP TO 6 SCRATCH FILE UNIT NUMBERS.
MM 6 11 12 13 14 15 16
* FILE 10 (OR ANY UNIT NUMBER) COULD BE PERMANENTLY SAVED.
* @ 10 'SAVE10.OUT'
* CALL THE RUNOFF BLOCK USING $RUNOFF
$RUNOFF
* THERE ARE TWO A1 OR TITLE CARDS IN EVERY BLOCK.
* ALL CHARACTER DATA MUST BE ENLOSED IN SINGLE QUOTES.
A1 'RUNOFF EXAMPLE 2, SIMPLE CONFIGURATION, 100 % IMPERVIOUS'
A1 'SINGLE CATCHMENT PLUS SINGLE PIPE, CONST. RAIN'
* COMMENT LINES CAN BE USED TO IDENTIFY INPUT VARIABLES.
* METRIC ISNOW NRGAG INFILM KWALTY IVAP NHR NMN NDAY MONTH IYRSTR
B1 0 0 1 0 0 0 0 0 3 12 88
B2 0 0 2
* 5-MIN TIME STEP, 2-HR SIMULATION
B3 300. 300. 300. 2 2.0
B4 0 0
D1 0
* KTYPE KINC KPRINT KTHIS KTIME KPREP NHISTO THISTO TZRAIN
E1 2 1 0 0 0 0 3 60.0 0.0
* STEP-FUNCTION HYETOGRAPH
* TIME=REIN(1) RAIN=REIN(2)
E3 0.0 1.0
E3 60.0 0.0
E3 120.0 0.0
* 2-FT DIAMETER CIRCULAR PIPE
* NAMEG NGTO NPG GWIDTH GLEN G3 GS1 GS2 G6 DFULL GDEPTH
G1 101 102 2 2.0 300.0 0.005 0.0 0.0 0.014 0.0 0.0
* 2-AC IMPERVIOUS CATCHMENT
* JK NAMEW NGTO WW1 WW2 WW3 WW4 WW5 WW6 WW7 WW8 WW9 WW10 WW11
H1 1 201 101 200.0 2.0 100.0 0.01 0.020 0.20 0.03 0.3 3.0 0.3 0.001
* PRINT CONTROL PARAMETERS
M1 2 1
* DEFAULT STARTING AND STOPPING PRINT TIME IS DURATION OF SIMULATION.
M2 1 0 0
* PRINT HYDROGRAPHS FOR PIPE 101 AND INLET 102.
M3 101 102
* END THE SWMM SIMULATION BY USING $ENDPROGRAM.
* (ANOTHER BLOCK COULD FOLLOW INSTEAD.)
$COMBIN
A1 5
$ENDPROGRAM
The time step used during the simulation at any one time is the minimum of the link and node time steps. As the example shown below shows usually the link time step (based on the CFL) condition is more restrictive than the node time step. In the ima…
on Wednesday
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Hello All
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Some of the alternatives we have are :
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