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Numerical analysis of lateral geomorphology changes by channel bed deposition and bank erosion at the river confluence section
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 Title & Authors
Numerical analysis of lateral geomorphology changes by channel bed deposition and bank erosion at the river confluence section
Ji, Un; Jang, Eun Kyung;
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 Abstract
The confluence section of rivers forms complex flow pattern due to inflow discharge variation at the mainstream and tributary. Due to complex flow characteristics, bed change and bank erosion at the local section produce lateral geomorphology changes in rivers. In this study, bankline change by bank erosion and bed change were simulated using CCHE2D of 2-dimensional numerical model for quantitative analysis of lateral changes in the confluence section of South Han River and Geumdang Stream. As a result, bankline at the left-side channel of the mainstream was largely changed in the downstream section of the confluence compared to the upstream section. Also, bank erosion in the tributary was hardly occurred and bankline at the left-side tributary and right-side main stream moved to riverside land due to decreased velocity and deposition.
 Keywords
Bank Erosion;Bed Change;CCHE2D;Numerical Modeling;River Confluence;
 Language
Korean
 Cited by
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