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| DOI：10.13522/j.cnki.ggps.2017.12.013 |
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| Improving the Uniformity of Water Distribution in the Box Culvert of Urban Drainage Pumping Station with a Slanted Intake |
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ZHANG Rui, XU Hui, CHEN Yuling, FENG Jiangang, WANG Xiaosheng, ZENG Yifu
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College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China
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| Abstract: |
| In this paper, the flow and water distribution uniformity in the box culvert of an urban drainage pumping station with slanted intake in Shanghai was studied numerically based on the unsteady Reynolds averaged N-S equation and the RNG k-ε turbulence model. The results showed that the oblique inflow could easily cause an unequal water distribution in different box culvert channels of the urban drainage pumping station, and that there were some adverse flow patterns such as backflow, vortex flow, transverse flow, found in the gate shaft, some box culvert channels and the fore-bay of the pumping station. The flow pattern and water distribution uniformity in the box culvert could be improved by a thorough design and setting a new typical rectification measure in the gate shaft. And there would be good inflow condition in the pumping station. The results of this paper could provide some valuable references to design and operation of urban drainage pumping station with slanted intake. |
| Key words: pumping station; slanted intake; inflow box culvert; uniformity of water distribution; numerical simulation |
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