| Cite this article: | 刘鸿涛,向丹丹,邹玉涛,等.三翼分水旋转门模型试验与数值模拟研究[J].灌溉排水学报,0,():-. |
| Liu Hongtao,XIANG Dandan,ZOU Yutao,et al.三翼分水旋转门模型试验与数值模拟研究[J].灌溉排水学报,0,():-. |
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| Research on Model Test and Numerical Simulation of Three-wing Water-diverting Rotary Door |
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Liu Hongtao1, XIANG Dandan1, ZOU Yutao2, WU Yingjun3, LIU Handan4
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1.Changchun Institute of Technology;2.Jilin Province Water resources and hydropower survey design Institute;3.Changchun Institute Of Technology;4.changchun institute of technology
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| Abstract: |
| Abstract:【Objective】In order to meet the requirements of integrated measurement and control construction of measuring water facilities in irrigation areas, this paper designs a new type of sluice gate - water separation rotary gate based on the hydraulic design principle of turbine volute, and describes its structure composition and flow measurement principle. The water separation rotary gate has simple structure and high integration degree of measurement and control, and can strictly control the water quantity of irrigation channels according to the required flow. At the same time, it has the function of water separation, oxygen increase and improving crop quality, which has important popularization value and application prospect.【Method】On the basis of the correctness of the numerical simulation method verified by physical experiments, the hydraulic characteristics of the rotary gate under 10 rotating speed conditions in the flow range of 3-10.08L/s were numerically simulated, and the variation rules of water depth, velocity distribution and head loss along the water were analyzed.【Results】The average relative error of the formula based on model test is 3.35%, and the minimum relative error is 0.28%. The average percentage of local head loss in the total upstream stable head is 46.03%, and the minimum percentage is 16.48%. When the rotating door is working, the dissolved oxygen content in the water in the irrigation channel is increased by the rotation of the door. The maximum oxygen increase rate is 108.30%, and the average oxygen increase rate is 100.54%. The minimum error between simulated water depth and test water depth is 0.07%, and the average error is 0.77%. The average error between test flow and simulated flow is 4.39%, and the minimum error is 0.09%.【Conclusion】The average relative error of the formula based on model test is 3.35%, and the minimum relative error is 0.28%. The average percentage of local head loss in the total upstream stable head is 46.03%, and the minimum percentage is 16.48%. When the rotating door is working, the dissolved oxygen content in the water in the irrigation channel is increased by the rotation of the door. The maximum oxygen increase rate is 108.30%, and the average oxygen increase rate is 100.54%. The minimum error between simulated water depth and test water depth is 0.07%, and the average error is 0.77%. The average error between test flow and simulated flow is 4.39%, and the average error is 0.77%. The average error between test flow and simulated flow is 4.39%, and the minimum error is 0.09%. |
| Key words: Measuring water in open channels; Water diversion revolving door; Hydraulic performance; Model test; Numerical simulation; Oxygenation capacity. |
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