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Water 2017, 9(9), 646; https://doi.org/10.3390/w9090646

Study of Self-Induced Sloshing in Model Test of a Water Retaining Weir

College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China
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Received: 11 July 2017 / Revised: 20 August 2017 / Accepted: 25 August 2017 / Published: 30 August 2017
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Abstract

This paper presents for the first time observations of a self-induced sloshing phenomenon in the water-retaining weir model. Fast Fourier Transform method is used to detect the dominant frequency for the sloshing water. The characteristics of the sloshing water in terms of sloshing strength and frequency are experimentally studied for six different cases. Results show that both sloshing regions and sloshing strength depends on not only the water levels but also the inlet velocities, and the relationship between them is displayed in this paper. Different prediction models for sloshing frequencies are built and compared with the experimental results, with discussions of the differences between them. For higher water level sloshing region, a new factor is introduced to the Faltinsen’s prediction formula, leading to a better agreement between prediction and experimental results. The mechanism of the self-induced sloshing is also discussed in this paper. View Full-Text
Keywords: self-induced sloshing; water-retaining weir; fast fourier transform; stepped low-pressure water supply self-induced sloshing; water-retaining weir; fast fourier transform; stepped low-pressure water supply
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Hua, Y.; Cai, F.; Zhou, J.; Zhang, W. Study of Self-Induced Sloshing in Model Test of a Water Retaining Weir. Water 2017, 9, 646.

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