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Numerical Analysis for Bed Changes at the Meandering Stream due to a Short Term Flood Event
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 Title & Authors
Numerical Analysis for Bed Changes at the Meandering Stream due to a Short Term Flood Event
Ji, Un; Jang, Eun Kyung; Lee, Chan Joo;
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 Abstract
In this study, flow characteristics and bed changes during a short term flood event were analyzed using the two-dimensional CCHE2D model for a meandering sand-bed river, the Naesung Stream. Flow and bed change simulation was carried along the three sub-reaches with sinuosity of 1.2, 1.6 and 2.2 for the 6-day flood event occurring in June 2011. The simulation results indicated that velocity variation due to flow concentration was larger along the sub-reach with the sinuosity less than 1.5 and bed erosion at the outside of the bend was increased by time. In the sub-reach with the sinuosity less than 1.5, the maximum flood discharge produced the maximum flow velocity over 1.6 m/s to 2 m/s locally.
 Keywords
Bed change;CCHE2D;Naesung stream;Numerical modeling;Meandering channel;
 Language
Korean
 Cited by
 References
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