Figure10.37 shows the entire BRI-STARS model profile for starting and final conditions from
the steady state run. By placing the upstream boundary well upstream of the bridge, no
sediment inflow needed to be specified. The model eroded material from the upstream
sections and maintained a stable channel upstream of the bridge. This provided the
necessary sediment supply to the bridge. The model could have been set up with less length
upstream of the bridge, but an appropriate amount of sediment supply would have to be
entered in the input file.
40
35
30
25
20
15
Starting Bed
Starting WS, SS
10
Max. Scour, SS
WS at Max Scour, SS
5
0
0
2000
4000
6000
8000
10000
12000
Distance (ft)
Figure 10.37. BRI-STARS model profiles for steady-state run.
10.48
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