中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Numerical Simulation of Unsteady Hyperconcentrated Sediment-Laden Flow in the Yellow River

文献类型:SCI/SSCI论文

作者He L.
发表日期2012
关键词Numerical simulation One-dimensional model Hyperconcentrated sediment-laden flow Yellow river suspended sediment model transport uncertainty inundation calibration floods bed
英文摘要The major obstacles to simulating flood flow in the Yellow River are its high sediment concentration, complex compound cross section, and rapid change in channel planform. This paper presents an improved one-dimensional numerical model that takes into account the effect of sediment concentration and bed change on mass and momentum conservation of flood flow in the Yellow River. The model is calibrated and then validated by simulating three individual flood events. Results show that an increase in sediment concentration leads to a reduction in flood wave celerity and peak discharge. The generalized likelihood uncertainty estimation (GLUE) method is used to evaluate the uncertainty of modeling results. A sensitivity index, analogous to the Nash-Sutcliffe efficiency factor, is adopted to quantify the sensitivity of calibration parameters. The modeling results are sensitive to the choice of Manning's roughness coefficient and the empirical recovery coefficient for suspended sediment transport at reaches of transitional channel planform. DOI: 10.1061/(ASCE)HY.1943-7900.0000599. (C) 2012 American Society of Civil Engineers.
出处Journal of Hydraulic Engineering-Asce
138
11
958-969
收录类别SCI
语种英语
ISSN号0733-9429
源URL[http://ir.igsnrr.ac.cn/handle/311030/30864]  
专题地理科学与资源研究所_历年回溯文献
推荐引用方式
GB/T 7714
He L.. Numerical Simulation of Unsteady Hyperconcentrated Sediment-Laden Flow in the Yellow River. 2012.

入库方式: OAI收割

来源:地理科学与资源研究所

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