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Observation of Navigational Hydraulic Characteristics in the Downstream Entrance Area
Strong transverse flows and fluctuations often occur in the downstream approach channel and entrance area during flood discharge at high dam hubs. This study takes a power station as a research sample. Flow velocities, transverse flow intensities, fluctuation characteristics and ship navigation status are analyzed and studied through field observations. The results show that during flood discharge the entrance area experiences transverse short-wave fluctuations and significant transverse currents. The oscillation of hydraulic jumps is the direct factor causing fluctuations in the downstream entrance area. The fluctuation amplitude of the center and edge of the entrance area was generally large, and the fluctuation spread to the approach channel and continuous attenuation. The main fluctuation attenuation occurs at the transition from the broad riverway to the downstream restricted approach channel. As the flood discharge increases, the lateral rolling of the ships becomes more pronounced. The change in power station discharge has a relatively small effect on the ships’ heeling and trim.
Observation of Navigational Hydraulic Characteristics in the Downstream Entrance Area
Strong transverse flows and fluctuations often occur in the downstream approach channel and entrance area during flood discharge at high dam hubs. This study takes a power station as a research sample. Flow velocities, transverse flow intensities, fluctuation characteristics and ship navigation status are analyzed and studied through field observations. The results show that during flood discharge the entrance area experiences transverse short-wave fluctuations and significant transverse currents. The oscillation of hydraulic jumps is the direct factor causing fluctuations in the downstream entrance area. The fluctuation amplitude of the center and edge of the entrance area was generally large, and the fluctuation spread to the approach channel and continuous attenuation. The main fluctuation attenuation occurs at the transition from the broad riverway to the downstream restricted approach channel. As the flood discharge increases, the lateral rolling of the ships becomes more pronounced. The change in power station discharge has a relatively small effect on the ships’ heeling and trim.
Observation of Navigational Hydraulic Characteristics in the Downstream Entrance Area
Lecture Notes in Civil Engineering
Wang, Weiqiang (editor) / Wang, Chengzhi (editor) / Lu, Yang (editor) / Wang, Xin (author) / Zhang, Shouyuan (author)
2024-11-08
13 pages
Article/Chapter (Book)
Electronic Resource
English
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