| 引用本文: | 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,2025,44(9):93-102. |
| LIU Hongtao, XIANG Dandan, ZOU Yutao, WU Yingjun, LIU Handan,LIU Hongtao, XIANG Dandan, ZOU Yutao, WU Yingjun, LIU Handan,LIU Hongtao, XIANG Dandan, ZOU Yutao, WU Yingjun, LIU Handan,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,2025,44(9):93-102. |
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| 摘要: |
| 【目的】为了满足灌区量测水设施测控一体化建设需求，拟基于水轮机蜗壳水力设计原理设计一种新型闸门—分水旋转门，并简述其结构组成及测流原理。【方法】开展了3.00~7.00 L/s流量范围下的物理模型试验，验证了数值模拟方法的正确性；对3.00~10.08 L/s流量范围下10种转速工况的分水旋转门水力特性进行数值模拟，分析其沿程水深、流速分布、水头损失等的变化规律。【结果】基于模型试验的测流公式平均相对误差为3.35%，最大相对误差为5.18%；其局部水头损失占上游稳定总水头的平均百分比为46.03%，最小百分比为16.48%；分水旋转门工作时，门扇旋转增加灌溉渠道内水中溶解氧量，其最大增氧率达到108.30%，平均增氧率为100.54%；模拟水深与试验水深间的最大误差为2.87%，平均误差为0.77%；试验流量与模拟流量间的平均误差为4.39%，最小误差为5.16%。【结论】本文提出的测流公式具有较高的测流精度，满足规范对量水设施的精度要求，表明该分水旋转门可为矩形渠道流量量测提供依据；将渠道各断面流量、水深的模拟值与试验进行对比，其相对误差均＜5%，可为分水旋转门后续测流研究提供理论基础；分水旋转门运作时增加了渠道灌溉水中溶解氧量，有利于提高作物品质与产量。本文对分水旋转门的性能进行了初步研究，该分水旋转门结构简单，测控一体化程度高，可根据所需流量进行灌溉渠道水量的严格调控，同时兼具分水、增氧、有利于提高作物品质的作用，研究成果可为该量控水装置的设计及在灌溉渠道的应用选型提供参考，具有重要推广价值和应用前景。 |
| 关键词: 明渠量水；分水旋转门；水力性能；模型试验；数值模拟；增氧能力 |
| DOI：10.13522/j.cnki.ggps.2024248 |
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| Experimental and numerical investigation of three-wing water-diverting rotary gate |
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LIU Hongtao, XIANG Dandan, ZOU Yutao, WU Yingjun, LIU Handan
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1. School of Water Conservancy Engineering, Changchun Institute of Technology, Changchun 130012, China;
2. Sichuan Longzuo Engineering Consulting Co., Ltd, Chengdu 625599, China;
3. Jilin Institute of Water Resources and Hydropower Survey and Design, Changchun 130021, China;
4. Changchun Hongrun Irrigation Technology Co., Ltd, Changchun 130012, China
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| Abstract: |
| 【Objective】There has been a growing demand in modern irrigation systems for devices that integrate precise flow measurement with effective water control. Traditional sluice gates lack multifunctionality and adaptability to smart irrigation needs. This paper addresses this by designing a new sluice gate - water separation rotary gate, based on the hydraulic design principle of turbine volute.【Method】A detailed structural design and flow measurement principle of the rotary gate are presented. Numerical simulations were conducted to evaluate the hydraulic performance of the gate under ten rotational speed scenarios, with the flow rate ranging from 3.00 to 10.08 L/s. The accuracy of the model was validated through physical experiments, in which the flow field characteristics, including water depth, velocity distribution and head loss, were analyzed.【Result】The average relative error of the flow measurement formula derived from the physical model was 3.35% and the minimum error was 0.28%. Local head loss accounted for an average of 46.03% of the total upstream stable head, with a minimum value of 16.48%. Rotation of the gate significantly improved water aeration, with the maximum dissolved oxygen increasing by 108.30% and the average increasing by 100.54%. The simulation results agreed well with experimental data. The average error in water depth was 0.77% and the minimum was 0.07%. The average error in simulated flow rate was 4.39% and the minimum error was 0.09%.【Conclusion】The designed water-diverting rotary gate shows accurate flow measurement, effective water control, and enhanced oxygenation capacity. Its simple structure and multifunctionality make it a promising technology for improving irrigation water use efficiency and water quality in irrigation systems. |
| Key words: measuring water in open channels; water diversion revolving door; hydraulic performance; model test; numerical simulation; oxygenation capacity |
