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http://dx.doi.org/10.12652/Ksce.2015.35.6.1229

Numerical Analysis for Bed Changes at the Meandering Stream due to a Short Term Flood Event  

Ji, Un (Korea Institute of Civil Engineering and Building Technology)
Jang, Eun Kyung (Korea Institute of Civil Engineering and Building Technology)
Lee, Chan Joo (Korea Institute of Civil Engineering and Building Technology)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.35, no.6, 2015 , pp. 1229-1236 More about this Journal
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;
Citations & Related Records
Times Cited By KSCI : 8  (Citation Analysis)
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