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Study of Hydraulic Characteristics of Fish-friendly Water Channel Based on Large-eddy Simulation
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Hao HONG1, Jie DAI2, Jia-cheng GU1, Shai LIU1, Yi-qing GONG3, Jing-qiao MAO2
Water Resources and Power | 2025, 43(9) : 56 - 59
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Water Resources and Power | 2025, 43(9): 56-59
Study of Hydraulic Characteristics of Fish-friendly Water Channel Based on Large-eddy Simulation
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Hao HONG1, Jie DAI2, Jia-cheng GU1, Shai LIU1, Yi-qing GONG3, Jing-qiao MAO2
Affiliations
  • 1.China Yangtze Power Co., Ltd., Yichang 430000, China
  • 2.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China
  • 3.Institute of Water Science and Technology, Hohai University, Nanjing 211106, China
Published: 2025-09-25 doi: 10.20040/j.cnki.1000-7709.2025.20242154
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The construction of fish-friendly water passage has become an inevitable demand for habitat connectivity and protection. To further optimize the hydraulic characteristics of fish-friendly channels, based on a flume experiment, large-eddy simulation (LES) is used to construct a three-dimensional hydrodynamic model. The channel flow is simulated under the influence of regular triangular baffles and permeable triangular baffles. The results indicate that the permeable triangular baffle design effectively reduces the strength of the main recirculation zone and limits its development. The turbulent kinetic energy and Reynolds stress behind the baffle are reduced due to water inflow through the permeable apertures, leading to a 34.5% reduction in maximum turbulent kinetic energy along the vertical axis. Furthermore, at two different water depths, the permeable baffle design increases the proportion of resting zones and local low-velocity zones, while significantly reducing the proportion of negative flow velocity zones that are harmful to fish.

large-eddy simulation  /  fish-friendly  /  water passage  /  permeable baffle
Hao HONG, Jie DAI, Jia-cheng GU, Shai LIU, Yi-qing GONG, Jing-qiao MAO. Study of Hydraulic Characteristics of Fish-friendly Water Channel Based on Large-eddy Simulation[J]. Water Resources and Power, 2025 , 43 (9) : 56 -59 . DOI: 10.20040/j.cnki.1000-7709.2025.20242154
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Year 2025 volume 43 Issue 9
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Article Info
doi: 10.20040/j.cnki.1000-7709.2025.20242154
  • Receive Date：2024-11-17
  • Online Date：2025-12-16
  • Published：2025-09-25
Article Data
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History
  • Received：2024-11-17
  • Revised：2024-12-24
Funding
Affiliations
    1.China Yangtze Power Co., Ltd., Yichang 430000, China
    2.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China
    3.Institute of Water Science and Technology, Hohai University, Nanjing 211106, China
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https://castjournals.cast.org.cn/joweb/sdnykx/EN/10.20040/j.cnki.1000-7709.2025.20242154
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
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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