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http://dx.doi.org/10.3741/JKWRA.2002.35.6.693

Prediction of River Bed Variation using Numerical Model  

An, Sang-Jin (충북대학교 토목공학과)
Yoon, Seok-Hwan (충북대학교 대학원 토목공학과)
Beack, Nam-Dae (남원건설엔지니어링 수자원부)
Publication Information
Journal of Korea Water Resources Association / v.35, no.6, 2002 , pp. 693-701 More about this Journal
Abstract
In this study, one dimensional sediment movement numerical model(HEC-6) and semi-two dimensional sediment movement numerical model(GSTARS 2.1) were applied to solve the change of channel geometry in Bocheong stream. GSTARS 2.1 model was applied for the three selected sediment transport formulas(Ackers and White's, Engelund and Hanson, Yang formula) from 1993 to 2000 measured data on each section. The simulation results of Ackers and White formula for long -term bed changes are good when compared to the measured data. The HEC-6 model was applied for the simulation of one dimensional sediment movement for the same period. Comparison of the long-term simulations by GSTARS 2.1 and HEC-6 models with measured data shows that simulations by both models are in fair agreement with measured data in overall trend of the river bed changes. Comparisons of simulated cross sectional bed-elevations with measured data shows that GSTARS 2.1 model gives better agreement with than simulated results bed changes on the HEC-6 model.
Keywords
GSTARS 2.1 model; HEC-6 model; River Bed Variation;
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