Study on Drag Reduction of Suspended Flow with Extra Fine Sediment

Chang Jun Zhu

doi:10.4028/www.scientific.net/KEM.439-440.1567

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 439-440Study on Drag Reduction of Suspended Flow with...

Study on Drag Reduction of Suspended Flow with Extra Fine Sediment

Abstract:

In view of the abnormal phenomenon that a flood peak increased in August 2004 and July 2005 along the lower Yellow River, the mechanism of this abnormal phenomenon is studied. It is found that the flood increase was due to the decrease the channel roughness in the propagation of high concentrated flood carrying the extra fine sediment which was discharged from xiaolangdi reservoir. In view of this, the equation of drag reduction rate is derivated under variable k pattern, and is applied to the reality. The results show that the equation is reliable and has important role in flood control and calculation in water level with hyperconcentration flow. The study of this paper only is a try and discuusion, and need to be improved.

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Periodical:

Key Engineering Materials (Volumes 439-440)

Pages:

1567-1571

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.439-440.1567

Citation:

Cite this paper

Online since:

June 2010

Authors:

Chang Jun Zhu

Keywords:

Drag Reduction, Natural River, Sediment, Variable K

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