Experimental Investigation and Assessment of Turbidity Current Head Dynamic Over a Mobile Bed

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Sharifnezhad a.; KASHEFIPOUR S.M.; GHOMSHI M.

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Paper Information

Journal: WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE) Year:2018 | Volume:28 | Issue:3 Page(s): 131-140

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Information Journal Paper

Title

Experimental Investigation and Assessment of Turbidity Current Head Dynamic Over a Mobile Bed

Author(s)

Sharifnezhad a. | KASHEFIPOUR S.M. | GHOMSHI M. | Issue Writer Certificate

Keywords

Bed formQ2

Head velocityQ3

Mobile bedQ2

Rigid bedQ2

Turbidity currentQ2

Abstract

Turbidity current phenomenon is one of the most important factors in reservoir sedimentation and sediment distribution, which causes management and operational problems and decreases dam’ s useful life. Study and investigation of progressive section (head of Turbidity current), as the most significant and considerable section is essential for sustainable management of dam reservoirs. So far, most of the studies have been conducted under experimental conditions on Rigid beds. But in this study, in order to achieve more realistic results regarding natural conditions in rivers and reservoirs, the experiments were carried out on an erodible and Mobile bed. So dynamic of Turbidity current head was analyzed on rigid and erodible beds for different effective hydraulic conditions. It was shown that erodible bed increased the Head velocity of Turbidity current and Keulegan coefficient up to about 20% and also, increased the relative forehead height up to about 40% with increasing flume bed slope. In addition, in order to estimate the averaged Head velocity, an equation with correlation coefficient of 0. 86, was developed using multivariate linear regression and effective dimensionless parameters. Finally, sensitivity analysis of the equation’ s dimensionless parameters showed that the most effective parameter in estimation of the Head velocity average is Richardson number.

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APA: Copy

Sharifnezhad, a., KASHEFIPOUR, S.M., & GHOMSHI, M.. (2018). Experimental Investigation and Assessment of Turbidity Current Head Dynamic Over a Mobile Bed. WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE), 28(3 ), 131-140. SID. https://sid.ir/paper/147687/en

Vancouver: Copy

Sharifnezhad a., KASHEFIPOUR S.M., GHOMSHI M.. Experimental Investigation and Assessment of Turbidity Current Head Dynamic Over a Mobile Bed. WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE)[Internet]. 2018;28(3 ):131-140. Available from: https://sid.ir/paper/147687/en

IEEE: Copy

a. Sharifnezhad, S.M. KASHEFIPOUR, and M. GHOMSHI, “Experimental Investigation and Assessment of Turbidity Current Head Dynamic Over a Mobile Bed,” WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE), vol. 28, no. 3 , pp. 131–140, 2018, [Online]. Available: https://sid.ir/paper/147687/en

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