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Calculation of Water Surface Profile of Stepped Chute Based on Dimensionless Relative Specific Energy Law
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Bao-jun ZHANG, Guo-wei ZHAO, Le LIU, Guo-dong YOU, Hui-ping ZHANG
Water Resources and Power | 2023, 41(2) : 112 - 116
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Water Resources and Power | 2023, 41(2): 112-116
• WATER CONSERVANCY AND HYDROPOWER ENGINEERING •
Calculation of Water Surface Profile of Stepped Chute Based on Dimensionless Relative Specific Energy Law
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Bao-jun ZHANG, Guo-wei ZHAO, Le LIU, Guo-dong YOU, Hui-ping ZHANG
Affiliations
  • Binzhou Yellow River Irrigation Service Center, Binzhou 256600, China
Published: 2023-02-25 doi: 10.20040/j.cnki.1000-7709.2023.20220679
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Aiming at the complicated law of specific energy along stepped chute and the low accuracy and limited application scope of current calculation method of water surface profile, a reliable method of calculating water surface profile was proposed. Based on hydraulic model test, this paper introduced the relative specific energy and made dimensional analysis. Then the dimensionless relative specific energy was systematically studied qualitatively and quantitatively. The results show that the dimensionless relative specific energy is related to the relative critical water depth, spillway slope and dimensionless position. The dimensionless relative specific energy has a good linear correlation along the stepped spillway. Based on the quantitative research results, the empirical formula of dimensionless relative specific energy calculation was given, and a new method of water surface profile calculation was obtained. The analysis of numerical example shows that the calculation method of water surface profile has high accuracy and wide application range, which can provide theoretical reference and technical support for the design of stepped chute.

stepped chute  /  dimensionless relative specific energy  /  law  /  water surface profile calculation
Bao-jun ZHANG, Guo-wei ZHAO, Le LIU, Guo-dong YOU, Hui-ping ZHANG. Calculation of Water Surface Profile of Stepped Chute Based on Dimensionless Relative Specific Energy Law[J]. Water Resources and Power, 2023 , 41 (2) : 112 -116 . DOI: 10.20040/j.cnki.1000-7709.2023.20220679
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Year 2023 volume 41 Issue 2
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Article Info
doi: 10.20040/j.cnki.1000-7709.2023.20220679
  • Receive Date：2022-04-07
  • Online Date：2026-01-27
  • Published：2023-02-25
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  • Received：2022-04-07
  • Revised：2022-05-05
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    Binzhou Yellow River Irrigation Service Center, Binzhou 256600, China
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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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