Geoscience Reference
In-Depth Information
0.45
0.4
1.0
10
−4
ε=
×
m
2
/s
0.35
4.0
10
−4
ε=
×
m
2
/s
0.3
0.25
0.2
0.15
1000
900
800
700
600
500
400
300
200
100
0
Distance from downstream (m)
Fig. 6.
Discharge in the vegetated floodplains.
those proposed previously. The interfacial eddy viscosity was estimated,
and its impact on the backwater computations was investigated. It was
demonstrated that floodplain vegetation strengthens the shear layer at the
juncture and reduces the discharge in the floodplains. The method proposed
herein suggested that floodplain vegetation further increases the discharge
in the floodplains, but decreases the discharge in the main channel, com-
pared with conventional methods.
Acknowledgment
This study was supported by the 2003 Core Construction Technology Devel-
opment Project (03-SANHAKYOUN-C03-01) through the Urban Flood
Disaster Management Research Center in KICTTEP of MOCT KOREA.
References
1. T. Helmio,
Journal of Hydraology
(2002) 89-99.
2. H. Kang, Reynolds stress modeling of vegetated open-channel flows, Ph.D.
Thesis, Yonsei University, Seoul, Korea, 2005.
3. B. C. Yen, R. Camacho, R. Kohane and B. Westrich,
Proceeding of the 21st
IAHR Congress
, Melbourne, Australia
3
(1985) 439-445.
4. A. Tominaga and I. Nezu,
Journal of Hydraulic Engineering
117
, 1 (1991)
21-41.
5. D. Bousmar and Y. Zech,
Journal of Hydraulic Engineering
125
, 7 (1999)
696-706.
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