The World of Computer Software/World_Of_Computer_Software-02-387-Vol-3of3.iso/c/civil-ab.zip/MNDOTHYD.ZIP/IRRCHANL.TXT

Text File | 1985-09-09 | 16KB | 467 lines

                            IRREGULAR CHANNEL


IRRCHANL DOCUMENTATION:  Irregular channel program written in house
using Manning's equation.


     The cross section may have up to 21 points.  Coordinates are
entered in order from left to right.  The X coordinate must always
increase from left to right.

     With each set of X and Y coordinates the value of manning's "n"
between this and the previous set of coordinates is entered.  The value
of "n" entered with the first set of coordinates is a dummy and is not
used in the calculations.  Each point can have a different manning's
"n" value.  The machine will ask for the "n" value of the main channel
so that the output can be separated into the areas left of main
channel, main channel and right of main channel.  Initial and final
depths which you enter must be based on the same datum as the Y
coordinates.  The limits on Y are +/- 9999.9.

     The number of output stages available is 20.

     The average velocity is the summation of Q times V for all "n"
regions divided by total Q.  The mean velocity is simply total
discharge divided by total area.

     The program also has the capability of storing x-sections on
diskette for future use.

     You also have several ways of modifying the x-section.  You can
alter manning's "n" either one point at a time or by increasing or
decreasing each of the three sections (left, main, and right) by a
given percent.  You can also redefine the x-section by making the
overbank narrower.  If the resultant x-section produced by this
narrowing operation contains more than 21 points, an error message is
printed and you have the option of trying again.

     PLACE HYDRAULICS DISK IN DRIVE "A" AND DATA DISK IN DRIVE "B"

1.  IS X-SECTION ON DISKETTE 0=YES  1=NO

    If X-section has been stored previously then answer yes.
    When just beginning, then the answer is no.

    If no:

2.  ENTER NO. OF PTS. ON X-SECTION?

    Input total number of coordinates of x,y,n.  Maximum 21 sets of
    points.  The P.C. will keep track of number, therefore, helping with
    input.

3.  ENTER NO. 1 x, y, "n"

    Input first coordinate separated by commas.  For example, 110, 950,
    0.1 (110 is the x distance, 950 is the elevation, and 0.1 is the
    manning's "n").  The manning's "n" for the first coordinate is a
    dummy.  The value of "n" between 1st coordinate and 2nd coordinate
    is defined by the value of "n" in the 2nd coordinate, etc.
    This question will appear until all specified coordinates are keyed
    in.

                             P.C.'s OUTPUT

POINT NO 1       2       3       4       5       6       7       8     9
X:    110     185     320     380     395     420     440     575   650
Y:   950.0   945.0   942.0   940.0   932.0   933.0   941.0   940.0 951.0
N:  0.0000  0.0900  0.0600  0.0600  0.0350  0.0350  0.0350  0.0500 .082
------------------------------------------------------------------------

4.  IS DATA CORRECT?  YES=0  NO=1

    If no:

     a.  ENTER NO. OF POINT IN ERROR?

         In the example - say the point #6, the elev. should be 931
         instead of 933, therefore, input 6 and press RETURN key.

     b.  ENTER NO. 6 x, y, "n"?

         In example, input 420,931, 0.035

                             P.C.'s OUTPUT

POINT #:  1      2      3      4      5      6      7      8      9
X:      110    185    320    380    395    420    440    575    650
Y:    950.0  945.0  942.0  940.0  932.0  931.0  941.0  940.0  951.0
N:   0.0000 0.0900 0.0600 0.0600 0.03500 0.0350 0.0350 0.0500 0.0800

5.  IS DATA CORRECT?  YES=0  NO=1

6.  ENTER MAIN CHANNEL "N"?

    In example, input 0.035
    This will separate the values for the left overbank, the
    right overbank and the main channel.

7.  ENTER INITIAL STAGE ELEVATION?

    Program is looking for the lowest desired elevation to begin the
    stage vs. discharge calculations.
    In example, input 937.

8.  ENTER FINAL STAGE ELEVATION?

    Looking for the highest desired elevation to end the stage vs.
    discharge calculations.
    In example, input 939.

9.  ENTER ELEVATION INCREMENT?

    The program is asking for a desired increment for the purpose of
    calculating stages between the initial and the final elevations.
    A large enough increment should be chosen so that no more than
    20 stages are generated.  If increment chosen will generate more
    than 20 stages, P.C. will give appropriate message and will ask for
    increment again.

    a.  THE NUMBER OF STAGES WILL EXCEED 20
    b.  ENTER MAIN CHANNEL "N"?
    c.  ENTER INITIAL STAGE ELEVATION?
    d.  ENTER FINAL ELEVATION?
    e.  ENTER ELEVATION INCREMENT?

                             P.C.'s OUTPUT

"N" FOR MAIN CHANNEL = 0.0350

 =STAGE=   =====AREA (SQ FT)=====   =WETTED PER (FT)==   ===HYD RAD===
    FEET   LEFT  MAIN RIGHT TOTAL    LT MAIN   RT  TOT    LT MAIN   RT
  937.00      0   197     0   197     0   49    0   49   0.0  4.0  0.0
  938.00      0   245     0   245     0   53    0   53   0.0  4.6  0.0
  939.00      0   297     0   297     0   58    0   58   0.0  5.1  0.0

10. ENTER SLOPE? (ft/ft)

    In example, 0.0005

                             P.C.'s OUTPUT

=STAGE=   ========VELOCITY (FT/SEC)=======   ======DISCHARGE (CFS)======
   FEET   LEFT   MAIN  RIGHT    AVE   MEAN   LEFT   MAIN  RIGHT  TOTAL
 937.00   0.00   2.40   0.00   2.40   2.40      0    474      0    474
 938.00   0.00   2.63   0.00   2.63   2.63      0    645      0    645
 939.00   0.00   2.84   0.00   2.84   2.84      0    844      0    844

________________________________________________________________________

11. CHANGE "N" 0% 1=NO 2=POINT?

    Gives opportunity to change Manning's "n" by percent or point by
    point.

    If by percent:  (input 0)

    a. % CHANGE IN LEFT "N" (+,-,0)?

       The program is looking for a positive or a negative percent
       change in left overbank. Zero (0) indicates no change.

       In example say -10% (input -10).

    b. % CHANGE IN MAIN "N" (+,-,0)?

       The program is looking for percent change in main channel "n"
       In example, input 0

    c. % CHANGE IN RIGHT "N"

       The program is looking for percent change in right overbank "n"
       In example, input 15 (meaning 15 percent)

                             P.C.'s OUTPUT

POINT #:  1      2      3      4      5      6      7      8      9
X:      110    185    320    380    395    420    440    575    650
Y:    950.0  945.0  942.0  940.0  932.0  931.0  941.0  940.0  951.0
N:   0.0000 0.0810 0.0540 0.5400 0.03500 0.0350 0.0350 0.0575 0.0920

------------------------------------------------------------------------

SLOPE = 0.0005000

13. IS DATA CORRECT?  YES=0 NO=1

    Gives opportunity to change anything else about the x-sec.

14. ENTER MAIN CHANNEL "N"?

    The main channel "n" could have been changed previously.
    In example, input 0.035

                             P.C.'s  OUTPUT

'N' FOR MAIN CHANNEL = 0.0350

15.  ENTER INITIAL STAGE ELEVATION?

     If desired, can change to different elevation than previously used.
     In example, input 937

16. ENTER FINAL ELEVATION?

    In example, input 939

17. ENTER ELEVATION INCREMENT?

    In example, input 1

                             P.C.'s OUTPUT

'N' FOR MAIN CHANNEL = 0.0350

 =STAGE=   =====AREA (SQ FT)=====   =WETTED PER (FT)==   ===HYD RAD===
    FEET   LEFT  MAIN RIGHT TOTAL    LT MAIN   RT  TOT    LT MAIN   RT
  937.00      0   197     0   197     0   49    0   49   0.0  4.0  0.0
  938.00      0   245     0   245     0   53    0   53   0.0  4.6  0.0
  939.00      0   297     0   297     0   58    0   58   0.0  5.1  0.0

SLOPE = 0.000500

=STAGE=   ========VELOCITY (FT/SEC)=======   ======DISCHARGE (CFS)======
   FEET   LEFT   MAIN  RIGHT    AVE   MEAN   LEFT   MAIN  RIGHT  TOTAL
 937.00   0.00   2.40   0.00   2.40   2.40      0    474      0    474
 938.00   0.00   2.63   0.00   2.63   2.63      0    645      0    645
 939.00   0.00   2.84   0.00   2.84   2.84      0    844      0    844

________________________________________________________________________

18. CHANGE 'N' 0=% 1=NO 2=POINT

    This question is looped until completely satisfied with
    the manning's "n" and, therefore, the stage vs. discharge results.

    If no:

19. NEW SLOPE?  YES=0  NO=1  (in ft./ft.)

    Gives opportunity to vary the slope.
    In example, input 0.

20. ENTER SLOPE?  (in ft./ft.)

    In example, input 0.0007

                             P.C.'s OUTPUT

SLOPE = 0.000700

=STAGE=   ========VELOCITY (FT/SEC)=======   ======DISCHARGE (CFS)======
   FEET   LEFT   MAIN  RIGHT    AVE   MEAN   LEFT   MAIN  RIGHT  TOTAL
 937.00   0.00   2.84   0.00   2.84   2.84      0    560      0    560
 938.00   0.00   3.11   0.00   3.11   3.11      0    762      0    762
 939.00   0.00   3.36   0.00   3.36   3.36      0    997      0    997

------------------------------------------------------------------------

21. CHANGE 'N'  0=%  1=NO  2=POINT?

    Opportunity to change manning's "n"
    In example, input 1

22. NEW SLOPE?  YES=0  NO=1

    Opportunity to change slope, etc.
    In example, input 1

23. NEW CALC. INTERVAL?  YES=0  NO=1

    Gives opportunity to make interval smaller and the range of stages
    closer to the design, overtopping, Q100 discharges.
    It is recommended that 0.1 be used as the final increment for
    the purpose of designing bridge structure opening.
    In example, input 0.

If yes: (input 0)

a.  ENTER INITIAL STAGE ELEVATION?

    Should be set just low enough to provide stages for
    desired discharges (Design, overtopping, or other).
    In example, input 944.6

b.  ENTER FINAL STAGE ELEVATION?


    In example, input 944.8 (It is assumed that design discharge is
    4500 cfs and Q100 is 5500 cfs).

c.  ENTER ELEVATION INCREMENT?

    In example, input 0.1

                             P.C.'s  OUTPUT

 =STAGE=   =====AREA (SQ FT)=====   =WETTED PER (FT)==   ===HYD RAD===
    FEET   LEFT  MAIN RIGHT TOTAL    LT MAIN   RT  TOT    LT MAIN   RT
  944.60    368   629   626  1622   177   64  167  408   2.1  9.8  3.8
  944.70    386   635   642  1663   182   64  167  413   2.1  9.9  3.8
  944.80    404   641   659  1704   186   64  168  419   2.2  9.9  3.8

SLOPE = 0.000700

=STAGE=   ========VELOCITY (FT/SEC)=======   ======DISCHARGE (CFS)======
   FEET   LEFT   MAIN  RIGHT    AVE   MEAN   LEFT   MAIN  RIGHT  TOTAL
 944.60   1.78   5.14   1.70   4.01   2.98    576   3236   1026   4839
 944.70   1.81   5.18   1.73   4.02   2.99    611   3288   1068   4967
 944.80   1.83   5.21   1.76   4.03   2.99    647   3340   1114   5100

------------------------------------------------------------------------
    d.  CHANGE "N"  0=%  1=NO  2=POINT

        In example, input 1

    e.  NEW SLOPE?  YES=0  NO=1

    f.  NEW CALC. INTERVAL?  YES=0  NO=1?

        In example, input 1

24. NARROWER OVERBANK  0=YES  1=NO

    Provides opportunity to eliminate a portion of x-section. from left
    or right overbank.
    Sometimes useful when balancing stage with observed highwater.
    Eliminates portion of x-section from conveying flow and, therefore,
    stage can be higher.
    Sometimes can be used to quickly determine the change in stage
    due to encroachment onto the floodplain by development.

If yes:  (input 0)

    a.  STORE ORIG. X-SECTION  0=YES  1=NO

        In example, input 0

    b.  DATA FILE #  (on P.C. asks for filename)

        The program loops on making x-section smaller and smaller, but
        once the desired effect is by-passed, the program can not make
        x-section bigger (because it looses from memory the points that
        have been chopped off).  The way to by-pass this, is to store
        the original x-section, then recall it to make a more accurate
        cut (narrowing).

    c.  ENTER MIN. LEFT X VALUE (or 0)?

        The program is looking for a beginning distance value (x value)
        along the x-section at which point a slope can be applied, as
        say 50:1, 10:1, 2:1 etc.  Since the x-section can be made only
        smaller, therefore, the most farthest value from the main
        channel is preferable.  Then if the results are still not
        satisfactory, another starting X value closer to the main
        channel can be entered.
        In example, input 250

    d.  ENTER LEFT OVERBANK SLOPE X:1

        The program is looking for a slope value as a ratio, as 10:1
        etc.
        In example, this slope will start at distance value of 250
        and continue at 2:1 as high as necessary.
        In example, input 2

    e.  ENTER MAX. RIGHT X VALUE (OR 0)?

        Same as for left overbank.  Begin with the farthest desirable
        distance from the main channel.
        Input of 0 (zero) indicates that no change is necessary.
        In example, input 0

    f.  ENTER RIGHT OVERBANK SLOPE X:1?

        Input a slope as 15:1 or a 0 (zero) if previous input was 0
        (zero).
        In example, input 0

                             P.C.'s OUTPUT

MINIMUM LEFT X VALUE =  250     SLOPE =  2:1
MAXIMUM RIGHT X VALUE = 0       SLOPE =  0:1

POINT #:  1      2      3      4      5      6      7      8      9
X:      237    250    320    380    395    420    440    575    650
Y:    950.0  943.6  942.0  940.0  932.0  931.0  941.0  940.0  951.0
N:   0.0000 0.0540 0.0540 0.4500 0.03500 0.0350 0.0350 0.0575 0.0920

    g.  IS DATA CORRECT?  YES=0  NO=1

        Gives opportunity to change any point in x-section.
        In example, input 0

    h.  ENTER MAIN CHANNEL "N"?

        In example, input 0.035

    i.  ENTER INITIAL STAGE ELEVATION?

        In example, input 944

    j.  ENTER FINAL STAGE ELEVATION?

        In example, input 944.2

    k.  ENTER ELEVATION INCREMENT?

        In example, input 0.1

                             P.C.'s OUTPUT

'N' FOR MAIN CHANNEL = 0.0350

 =STAGE=   =====AREA (SQ FT)=====   =WETTED PER (FT)==   ===HYD RAD===
    FEET   LEFT  MAIN RIGHT TOTAL    LT MAIN   RT  TOT    LT MAIN   RT
  944.00    266   593   527  1385   131   64  163  358   2.0  9.2  3.2
  944.10    279   599   543  1421   131   64  163  359   2.1  9.3  3.3
  944.20    292   605   560  1456   131   64  164  360   2.2  9.4  3.4

1.  ENTER SLOPE?

    In example, input 0.0007

                             P.C.'s OUTPUT

SLOPE = 0.000700

=STAGE=   ========VELOCITY (FT/SEC)=======   ======DISCHARGE (CFS)======
   FEET   LEFT   MAIN  RIGHT    AVE   MEAN   LEFT   MAIN  RIGHT  TOTAL
 944.00   1.17   4.95   1.54   3.99   2.91    311   2931    784   4025
 944.10   1.21   4.98   1.57   4.00   2.91    336   2980    822   4139
 944.20   1.24   5.01   1.59   4.00   2.92    363   3030    861   4254

-----------------------------------------------------------------------

    m.  CHANGE 'N'  0=%  1=NO  2=POINT?

    n.  NEW SLOPE?  YES=0  NO=1?

        In example, input 1

    o.  NEW CALC. INTERVAL?  YES=0  NO=1

        In example, input 1

    p.  LOAD X-SECT OFF DISK 0=YES  1=NO?

        If yes, will load the original (the last x-section that was
        stored previously) x-section and will repeat all questions
        beginning at b.

    If no  (input 1)

25. NARROWER OVERBANK  0=YES  1=NO?

    In example, input 11

26. STORE X-SECTION  0=YES  1=NO?

    If narrowing routine was not used previously, this provides
    opportunity to store the x-section for some future use.
    If narrowing routine was used previously, this provides the
    opportunity to store the changed x-section.
    In example, input 0
26. STORE X-SECTION  0=YES  1=NO?