hydrology-hydraulics research unit, lyon, france 1 sediment transport models used by cemagref during...
DESCRIPTION
Hydrology-Hydraulics Research Unit, Lyon, France 3 1-D model RUBARBETRANSCRIPT
Hydrology-Hydraulics Research Unit, Lyon, France 1
Sediment transport models used by Cemagref
during Impact projectAndré PAQUIER
Hydrology-Hydraulics Research Unit, Lyon, France 2
Aims of the models Rubarbe:1-D model: bed-load by sediment
discharge limited by transport capacity, evolution of main bed geometry during floods
Rubar20TS: 2-D model: suspended load by concentration, exchanges with bottom controlled by equilibrium concentration, evolution of flood plain deposits during floods
Hydrology-Hydraulics Research Unit, Lyon, France 3
1-D model RUBARBE
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Hydrology-Hydraulics Research Unit, Lyon, France 4
Example of use of MPM
0
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4
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0 10 20 30 40 50Y (m)
Z (m
)
Initial section Calculated stable section (m=1)DIPLAS stable section
Hydrology-Hydraulics Research Unit, Lyon, France 5
2-D model RUBAR20TS
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Hydrology-Hydraulics Research Unit, Lyon, France 6
Ptuj Lake
Hydrology-Hydraulics Research Unit, Lyon, France 7
Conclusions 1-D model « validated » for usual floods in
rivers and for some specific cases (flushing gate)
2-D model « validated » for deposits in reservoirs
Complementary models, » both relatively simple but including (very) unsteady
flow Use possible for breaching, near field, far
field?