Sample input
The following example is data set 2A with a Blench record, a BL record,
added. This record is not currently available in SAMwin and must be put in the
input file manually. The side factor is all that has been specified in this example.
The BL record can be added to the following calculations: normal depth, bottom
width, hydraulic roughness, flow distribution, and the riprap calculations given
discharge and depth. Since the Blench equation requires a discharge and a slope,
the BL record added to a data set which will calculate discharge, slope, or riprap
given velocity and depth will be ignored, usually with a message printed to the
output file saying the Blench regime calculations could not be made.
TI
TEST BLENCH REGIME EQUATION
TI
1
2
3
4
5
6
7
8
9
10
F#345678 2345678 2345678 2345678 2345678 2345678 2345678 2345678 2345678 2345678
CT
3
3
3
4
2
.3
2
.3
BL
.20
PF
1
.8
98
.48
50
.25
16
QW 6000
ES .0050
WT
65.
$$END
Sample Output
Adding a BL record to a data set only triggers additional output, "Table 3.
Blench Regime-Channel Dimensions." It does not change the calculated results
for that data set. Shown below is a selection of output from above input file,
including Table 3, Table 5-1 and Table 5-4. Tables 5-1 and 5-4 can be compared
to the output shown in the bottom width calculations section earlier to see that
there is no change in the calculated output specified by the input file without the
BL record.
TABLE
3.
BLENCH REGIME-CHANNEL DIMENSIONS (ASCE MANUAL 54).
FB=
0.95 FS=
0.20
N
Q
REGIME
REGIME
R
REGIME
n
VEL
FROUDE
SHEAR
DEPTH
WIDTH
SLOPE
Value
NUMBER
STRESS
CFS
FT
FT
FT
ft/ft
FPS
#/SF
1
6000.
11.00
168.8
9.73 0.000098 0.0207
3.23
0.17
0.06
TABLE
5-1.
CALCULATE BOTTOM WIDTH;
COMPOSITE PROPERTIES BY ALPHA METHOD.
**** N
Q
WS
BOTTOM
R
SLOPE
n
VEL
FROUDE
SHEAR
ELEV
WIDTH
Value
NUMBER
STRESS
CFS
FT
FT
FT
ft/ft
FPS
#/SF
**** 1
6000.
3.00
153.1
2.97 0.005000 0.0175
12.34
1.27
0.92
TABLE 5-4. HYDRAULIC PARAMETERS FOR SEDIMENT TRANSPORT
Q STRIP STRIP
---EFFECTIVE---
SLOPE
n-
EFF.
Froude
TAU
NO
NO
Q
WIDTH
DEPTH
VALUE
VEL.
NO
Prime
CFS
FT
FT
FT/FT
FPS
#/SF
1
1
6000.
163.6
2.95 0.005000 0.0170 12.45
1.28
0.729
111
Chapter 6
Input Requirements and Program Output for SAM.hyd
Previous Page
