| Cite this article: | 李伟,张新燕.仿舵型量水槽体形模拟研究[J].灌溉排水学报,2022,():-. |
| Wei Li,Xinyan Zhang.仿舵型量水槽体形模拟研究[J].灌溉排水学报,2022,():-. |
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| Study on Shape Simulation of Rudder-like Measuring Flume |
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Wei Li1,2, Xinyan Zhang1,2
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1.School of Water Conservancy and Construction Engineering,Northwest A&2.F University
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| Abstract: |
| 【Objective】In order to explore the alignment of measuring flume with smooth flow, stable flow pattern, accurate flow measurement and small head loss, the measuring flume based on streamline structure of underwater equipment is studied.【Method】In this paper, four flumes with different streamline shapes were selected and the numerical simulation method was used to study the hydraulic performance with different flow rates, including velocity distribution, water surface profile, Froude number, head loss and backwater height.【Result】It is found that the backwater height of the flume and the head loss are smaller when the diffusion is steeper. The results show that the upstream Froude numbers of the four flumes are less than 0.5 with different flow rates. Backwater heights are all less than 3 cm; The average error between the calculated flow rate and the simulated flow rate is less than 2.42%, indicating that the flow measurement accuracy is high. And have small head loss.【Conclusion】In this study, the water surface profile of the KKS type flume is relatively stable and the velocity distribution is more uniform with different flow rates. And, the head loss is less than 0.35 cm, the flow measurement accuracy is more than 98.27%, and the hydraulic performance is the best. So it can be used as the basic shape of the rudder-like flume. |
| Key words: Rectangular channel; Rudder-like measuring flume; Numerical simulation; Streamline shape. |
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