TY - GEN
T1 - H-ADCP food routing and flow modeling for evaluation of flow conveyance capacity in a tree-vegetated river channel
AU - Michioku, K.
AU - Miyamoto, H.
AU - Kanda, K.
AU - Ohchi, Y.
AU - Aga, K.
AU - Morioka, J.
AU - Uotani, T.
AU - Yoshida, K.
AU - Yoshimura, S.
N1 - Funding Information:
The authors express their sincere gratitude to the Foundation of River and Watershed Environment Management for their financial support by the Research Grant (Project No. 22-1212-011).
Publisher Copyright:
© 34th IAHR Congress 2011. All rights reserved.
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2011
Y1 - 2011
N2 - Although extensive research works have been performed on hydrodynamics of vegetated channels, little attention was paid on flow resistance mechanisms being dependent on submerged-level of tree vegetations. The authors developed a 2-D two-layer model that can simulate flows not only through but also over the vegetation, which enables us to analyze all ranges of water level and vegetation height. A H-ADCP system was equipped in a river to measure a time-dependent velocity profile in span-wise direction. The H-ADCP data and information on tree destruction were collected from several flood events during 2009-2010, which were compared with the analytical solutions. The numerical solution was in good agreement with the observed flow fields and the destructed tree areas, respectively. The findings are to contribute to devise a proper and feasible river management strategy.
AB - Although extensive research works have been performed on hydrodynamics of vegetated channels, little attention was paid on flow resistance mechanisms being dependent on submerged-level of tree vegetations. The authors developed a 2-D two-layer model that can simulate flows not only through but also over the vegetation, which enables us to analyze all ranges of water level and vegetation height. A H-ADCP system was equipped in a river to measure a time-dependent velocity profile in span-wise direction. The H-ADCP data and information on tree destruction were collected from several flood events during 2009-2010, which were compared with the analytical solutions. The numerical solution was in good agreement with the observed flow fields and the destructed tree areas, respectively. The findings are to contribute to devise a proper and feasible river management strategy.
KW - 2-D flow model
KW - Bed shear stress
KW - Drag force
KW - Floodplain
KW - Vegetated channel
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M3 - Conference contribution
AN - SCOPUS:84910133724
T3 - 34th IAHR Congress 2011 - Balance and Uncertainty: Water in a Changing World, Incorporating the 33rd Hydrology and Water Resources Symposium and the 10th Conference on Hydraulics in Water Engineering
SP - 2878
EP - 2885
BT - 34th IAHR Congress 2011 - Balance and Uncertainty
PB - International Association for Hydro-Environment Engineering and Research (IAHR)
T2 - 34th IAHR Congress 2011 - Balance and Uncertainty: Water in a Changing World, Incorporating the 33rd Hydrology and Water Resources Symposium and the 10th Conference on Hydraulics in Water Engineering
Y2 - 26 June 2011 through 1 July 2011
ER -