| VARIATION OF WATER DEPTH AND MANNING'S ROUGHNESS n DUE TO RIVER MEANDERING IN SUBCRITICAL FLOW REGIME |
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| 作者姓名： | Chin-Kun HUANG and Chang-Ling LIU Assistant professor |
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| 作者单位： | Chin-Kun HUANG and Chang-Ling LIU Assistant professor，Department of Hydraulics & Ocean Engineering，National Cheng Kung University，Tainan，70101，Taiwan，China Professor，Department of Hydraulics & Ocean Engineering，National Cheng Kung University，Tai |
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| 摘 要： | I INTRODUCTIONThe flow in a channel will be retarded by several factors, including surface roughness, vegetation,channel irregUlarity, channel alignment, and obstrUctions. The surface roughness is often only consideredin selecting the roughness coefficient, such as Manning's n. However, in case of a meandering channel,the channe1 alignment is sometimes more dominant than the surface roughness. The meandering ofnatural streams may increase the Manning's n as high as 30% (Chow, l969). Sc…
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VARIATION OF WATER DEPTH AND MANNING'S ROUGHNESS n DUE TO RIVER MEANDERING IN SUBCRITICAL FLOW REGIME |
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| Chin-Kun HUANG and Chang-Ling LIU Assistant professor,.VARIATION OF WATER DEPTH AND MANNING''''S ROUGHNESS n DUE TO RIVER MEANDERING IN SUBCRITICAL FLOW REGIME[J].International Journal of Sediment Research,2001,16(1). |
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| Authors: | Chin-Kun HUANG ChangLing LIU |
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| Abstract: | This paper aims to study the variation of water depth H and Manning's n due to the meandering of a river. It is found from experimental results that the increase in H and n is related to the sinuosities and the Froude numbers measured in the straight reach. In this study, the channel form is generated from sine-generated curve with ten different sinuosities. The results of this analysis can be applied to both cases of fixed bed and mobile bed. |
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| Keywords: | Water depth Manning's roughness Meandering |
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