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Time-frequency Characteristics Analysis of Pulsating Pressure of Water Flow Through Gate Based on Hilbert-Huang Transform
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Rui ZHANG1, Chun-ying SHEN1, Jiang-xia MA1, 2
Water Resources and Power | 2023, 41(5) : 174 - 177
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Water Resources and Power | 2023, 41(5): 174-177
• ELECTROMECHANICS AND CONTROL ENGINEERING •
Time-frequency Characteristics Analysis of Pulsating Pressure of Water Flow Through Gate Based on Hilbert-Huang Transform
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Rui ZHANG1, Chun-ying SHEN1, Jiang-xia MA1, 2
Affiliations
  • 1.School of Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, China
  • 2.Huaneng Lancang River Hydropower Inc., Kunming 650214, China
Published: 2023-05-25 doi: 10.20040/j.cnki.1000-7709.2023.20221075
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The plane gate controls water storage and discharge by opening and closing, and is easily damaged by the pulsating pressure of the water flow during operation. In order to study the interaction process between the opening and closing motion of the gate and the flow through the gate, this paper firstly conducted a three-dimensional numerical simulation of the flow through the gate during the opening and closing process of the gate under different bottom edge forms. And then the Hilbert-Huang transform was used to analyze the flow through the gate, and the time-frequency-amplitude information of the signal. The information analysis and comparison found that the bottom edge of the combined gate with a forward tilt of 45° and a backward tilt of 30° is gently affected by the pulsating pressure at the bottom of the gate, and the change difference of the energy amplitude at the measuring point was the smallest, and the water flow state was relatively stable. This study can provide a reference for the analysis of the pulsating pressure of the water flow through the plane gate.

plane gate  /  gate bottom edge  /  pulsating pressure  /  Hilbert-Huang transform  /  time-frequency characteristic analysis
Rui ZHANG, Chun-ying SHEN, Jiang-xia MA. Time-frequency Characteristics Analysis of Pulsating Pressure of Water Flow Through Gate Based on Hilbert-Huang Transform[J]. Water Resources and Power, 2023 , 41 (5) : 174 -177 . DOI: 10.20040/j.cnki.1000-7709.2023.20221075
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Year 2023 volume 41 Issue 5
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Article Info
doi: 10.20040/j.cnki.1000-7709.2023.20221075
  • Receive Date：2022-05-20
  • Online Date：2026-01-28
  • Published：2023-05-25
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  • Received：2022-05-20
  • Revised：2022-07-22
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Affiliations
    1.School of Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, China
    2.Huaneng Lancang River Hydropower Inc., Kunming 650214, China
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表12种不同金属材料的力学参数
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Family		 属数
Number of
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Number of
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Percentage of
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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