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http://dx.doi.org/10.12652/Ksce.2010.30.6B.607

Development and Application of Depth-integrated 2-D Numerical Model for the Simulation of Hydraulic Characteristics in Vegetated Open-Channels  

Kim, Tae Beom (연세대학교 공과대학 토목환경공학과)
Bae, Hea Deuk (연세대학교 공과대학 토목환경공학과)
Choi, Sung-Uk (연세대학교 공과대학 토목환경공학과)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.30, no.6B, 2010 , pp. 607-615 More about this Journal
Abstract
Vegetation drag tends to raise water level by retarding the flow. Previous studies have focussed on either the vertical structure modeling or the one-dimensional modeling, which can hardly be used to simulate the vegetative streams in practical engineering. Therefore, this paper presents a two-dimensional numerical model based on the depth-averaged flow equations. Vegetation drags are reflected in the flow equations, assuming non-flexible rigid cylinders. For validations, flow properties measured in both rectangular and compound channels are compared with simulated data, showing good agreement. Then, the model is applied to a reach in the Han River and the impact of floodplain vegetation on the flow is investigated.
Keywords
open-channel; vegetation; depth-integration; 2-d numerical model;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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