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Open AccessArticle
Study on the Fluctuating Load Characteristics of the Submerged Radial Gate in the High-Head Flood Discharge Outlet
by
Xiudi Lu
Xiudi Lu 1,
Yakun Liu
Yakun Liu 2,*,
Shoulin Tan
Shoulin Tan 1,
Wei Bao
Wei Bao 1,
Yangliang Lu
Yangliang Lu 2 and
Xinmeng Zhao
Xinmeng Zhao 2
1
Power China Guiyang Engineering Corporation Limited, Guiyang 550081, China
2
School of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, China
*
Author to whom correspondence should be addressed.
Appl. Sci. 2024, 14(17), 7470; https://doi.org/10.3390/app14177470 (registering DOI)
Submission received: 16 July 2024
/
Revised: 18 August 2024
/
Accepted: 22 August 2024
/
Published: 23 August 2024
Abstract
The fluctuating pressure acting on the radial gate in the high-head flood discharge outlet is the main excitation source of flow-induced vibration. Therefore, this paper delves into the distribution characteristics of fluctuating pressure on the panel of the high-head submerged radial gate based on hydraulic model tests. Hydraulic tests were first conducted to obtain the distribution patterns of time-averaged pressure and the root mean square (RMS) of fluctuating pressure on the radial gate panel. Secondly, the improved complete ensemble empirical mode decomposition with adaptive noise (ICEEMDAN) and HHT method was employed to identify the causes of the fluctuating pressure on the gate panel. Finally, the ICEEMDAN-SSA (the sparrow search algorithm)–LSTM (long short-term memory) method was utilized to achieve accurate prediction of the fluctuating pressure on the gate panel. The results show that the time-averaged pressure in the middle of the gate panel is higher than that at the top and near the bottom edge, which differs significantly from the static pressure distribution. The RMS of the fluctuating pressure near the bottom edge is higher than that in the middle and at the top. The fluctuating pressure acting on the gate panel in the time domain can be regarded as a stationary process. The fluctuating pressure on the gate panel is caused by the combined diffusion and random mixing of multi-scale vortices in the turbulent eddy structure. The ICEEMDAN-SSA-LSTM combined method significantly improves the prediction accuracy of fluctuating pressure on the gate panel compared to the LSTM and ICEEMDAN-LSTM methods.
Share and Cite
MDPI and ACS Style
Lu, X.; Liu, Y.; Tan, S.; Bao, W.; Lu, Y.; Zhao, X.
Study on the Fluctuating Load Characteristics of the Submerged Radial Gate in the High-Head Flood Discharge Outlet. Appl. Sci. 2024, 14, 7470.
https://doi.org/10.3390/app14177470
AMA Style
Lu X, Liu Y, Tan S, Bao W, Lu Y, Zhao X.
Study on the Fluctuating Load Characteristics of the Submerged Radial Gate in the High-Head Flood Discharge Outlet. Applied Sciences. 2024; 14(17):7470.
https://doi.org/10.3390/app14177470
Chicago/Turabian Style
Lu, Xiudi, Yakun Liu, Shoulin Tan, Wei Bao, Yangliang Lu, and Xinmeng Zhao.
2024. "Study on the Fluctuating Load Characteristics of the Submerged Radial Gate in the High-Head Flood Discharge Outlet" Applied Sciences 14, no. 17: 7470.
https://doi.org/10.3390/app14177470
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