Abstract
On the upstream of Atago weir, Hirose River, Japan, the sedimentation phenomenon is complex due to the coexistence of the weir and channel bend. Moreover, fine sediment accumulates on the river bed notably not only the floodplain. In this study, we conducted field observation and numerical computation. From the observation results, we found that fine sediment is the major component in the flood water and accumulates significantly close to the inner bank (silt and clay= 55% in the maximum). In the numerical computation, we calculated the flow using finite volume method with unstructured grid. The suspended-sediment transport was calculated by the advection-diffusion equation considering settling and resuspension. By considering the weir and cohesivity of the fine sediment, we reproduced the settling-resuspension characteristics of the fine sediment. From this calculation result, the deposition and erosion region was indicated.
Original language | English |
---|---|
Title of host publication | Advances in Water Resources and Hydraulic Engineering - Proceedings of 16th IAHR-APD Congress and 3rd Symposium of IAHR-ISHS |
Publisher | Springer-Verlag Berlin Heidelberg |
Pages | 815-820 |
Number of pages | 6 |
ISBN (Print) | 9783540894643 |
Publication status | Published - 2009 Jan 1 |
Event | 16th Congress of Asia and Pacific Division of International Association of Hydraulic Engineering and Research, APD 2008 and the 3rd IAHR International Symposium on Hydraulic Structures, ISHS 2008 - Nanjing, China Duration: 2008 Oct 20 → 2008 Oct 23 |
Other
Other | 16th Congress of Asia and Pacific Division of International Association of Hydraulic Engineering and Research, APD 2008 and the 3rd IAHR International Symposium on Hydraulic Structures, ISHS 2008 |
---|---|
Country | China |
City | Nanjing |
Period | 08/10/20 → 08/10/23 |
Keywords
- Cohesivity
- Finite volume method
- Grain distribution
- Nonequilibrium sediment transport
- Suspended sediment
ASJC Scopus subject areas
- Civil and Structural Engineering