Effects of Water Temperature on Clinging Flow of Rectangular Sharp-Crested Weir

Yan Jun Ji; Xin Zhang; Hai Feng Zhai; Dong Yang Ren; Ling Hua

doi:10.4028/www.scientific.net/AMM.212-213.1151

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 212-213Effects of Water Temperature on Clinging Flow of...

Effects of Water Temperature on Clinging Flow of Rectangular Sharp-Crested Weir

Abstract:

Surface tension associated with temperature is usually considered non-negligible to affect discharge capacity of sharp-crested weir when head is low. In the study, a two-dimensional numerical model verified by experiments was applied to simulate the effect of water temperature on discharge capacity of clinging flow for a rectangular sharp-crested weir at low head levels. The results showed that with a same flow rate, differences in the elevation of free surface were minimal between different temperature levels despite a slightly higher elevation of free surface at lower water temperature. The head-discharge relationships were very similar for different temperature levels. This study concluded that the effect of water temperature on head-discharge relationships and the discharge capacity of clinging flow for a rectangular sharp-crested weir was negligible at low heads.

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Periodical:

Applied Mechanics and Materials (Volumes 212-213)

Pages:

1151-1154

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.212-213.1151

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Online since:

October 2012

Authors:

Yan Jun Ji, Xin Zhang, Hai Feng Zhai, Dong Yang Ren, Ling Hua

Keywords:

Clinging Flow, Hydraulic, Numerical Simulation, Open Channel, Rectangular Sharp-Crested Weir, Water Temperature

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