南水北调中线工程典型倒虹吸进口上游垂向流速分布

付辉; 郭新蕾; 杨开林; 郭永鑫; 王涛

doi:10.14042/j.cnki.32.1309.2017.06.013

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南水北调中线工程典型倒虹吸进口上游垂向流速分布

付辉, 郭新蕾, 杨开林, 郭永鑫, 王涛

文章导航 > 水科学进展 > 2017 > 28(6): 922-929

付辉, 郭新蕾, 杨开林, 郭永鑫, 王涛. 南水北调中线工程典型倒虹吸进口上游垂向流速分布[J]. 水科学进展, 2017, 28(6): 922-929. doi: 10.14042/j.cnki.32.1309.2017.06.013

引用本文:

FU Hui, GUO Xinlei, YANG Kailin, GUO Yongxin, WANG Tao. Distribution of vertical flow velocity upstream of an inverted siphon in the Middle Route of South-to-North Water Diversion Project[J]. Advances in Water Science, 2017, 28(6): 922-929. doi: 10.14042/j.cnki.32.1309.2017.06.013

Citation:

FU Hui, GUO Xinlei, YANG Kailin, GUO Yongxin, WANG Tao. Distribution of vertical flow velocity upstream of an inverted siphon in the Middle Route of South-to-North Water Diversion Project[J]. Advances in Water Science, 2017, 28(6): 922-929. doi: 10.14042/j.cnki.32.1309.2017.06.013

南水北调中线工程典型倒虹吸进口上游垂向流速分布

doi: 10.14042/j.cnki.32.1309.2017.06.013

中国水利水电科学研究院流域水循环模拟与调控国家重点实验室, 北京 100038

基金项目: 国家重点研发计划资助项目（2016YFC0401706）；国家自然科学基金资助项目（51679263）

详细信息

作者简介:
付辉(1981-),男,安徽淮南人,高级工程师,主要从事水力学及冰工程相关研究。E-mail:fuhui_iwhr@126.com

中图分类号: TV131

Distribution of vertical flow velocity upstream of an inverted siphon in the Middle Route of South-to-North Water Diversion Project

State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China

Funds: The study is financially supported by the National Key R&D Program of China (No. 2016YFC0401706) and the National Natural Science Foundation of China (No. 51679263).

摘要: 倒虹吸是输水工程中常见的水工建筑物，研究倒虹吸进口上游的垂向流速分布是明晰其水力学性能的重要内容之一。以南水北调中线工程典型的唐河倒虹吸为研究对象，通过水力学概化模型试验，运用声学多普勒流速仪，实测不同水深和流量组合工况下倒虹吸进口上游的垂向流速分布。试验结果表明，受倒虹吸进口结构的影响，上游垂向流速分布呈现出明显的顶部流速降低和底部流速增加的现象，且淹没度越大、距离倒虹吸进口越近，上述趋势越显著；采用明渠对数型流速分布描述上述垂向流速分布时，其计算误差呈抛物线型分布，采用指数项修正后，新的修正公式可用于计算倒虹吸进口上游垂向流速分布。
- 倒虹吸 /
- 流速分布 /
- 模型试验 /
- 误差分析 /
- 输水工程
Abstract: The inverted siphon is a commonly used hydraulic structure in water diversion projects.Therefore, research on the vertical flow velocity distribution in the upstream of the inverted siphon inlet is important to elucidating its hydraulic performance.The typical inverted siphon of the Tanghe River in the Middle Route of the South-to-North Water Diversion Project was taken as the research object.Generalized hydraulic model experiments were carried out, and measurements were performed to obtain the vertical velocity distribution in the upstream of the inverted siphon inlet under different combinations of water depth and flow discharge, using an acoustic doppler velocimeter.The experimental results demonstrated that owing to the influence of the inverted siphon inlet structure, the upstream vertical velocity distribution largely exhibited lower velocity at the top and higher velocity at the bottom.Moreover, for greater submergence and closer to the inverted siphon inlet, the aforementioned trend was more evident.Further, when the above vertical velocity distribution was represented using the open-channel logarithmic velocity distribution approach, its computing error exhibited a parabolic distribution.When the open-channel logarithmic velocity distribution formula was improved using exponential terms, a new modified formula was obtained, which can be employed to compute the vertical velocity distribution in the upstream of the inverted siphon inlet.
- inverted siphon /
- velocity distribution /
- model test /
- error analysis /
- water diversion project

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南水北调中线工程典型倒虹吸进口上游垂向流速分布

doi: 10.14042/j.cnki.32.1309.2017.06.013

中国水利水电科学研究院流域水循环模拟与调控国家重点实验室, 北京 100038

基金项目: 国家重点研发计划资助项目（2016YFC0401706）；国家自然科学基金资助项目（51679263）

作者简介:
付辉(1981-),男,安徽淮南人,高级工程师,主要从事水力学及冰工程相关研究。E-mail:fuhui_iwhr@126.com

收稿日期: 2017-06-19
刊出日期: 2017-11-25

中图分类号: TV131

关键词:

倒虹吸 /

摘要: 倒虹吸是输水工程中常见的水工建筑物，研究倒虹吸进口上游的垂向流速分布是明晰其水力学性能的重要内容之一。以南水北调中线工程典型的唐河倒虹吸为研究对象，通过水力学概化模型试验，运用声学多普勒流速仪，实测不同水深和流量组合工况下倒虹吸进口上游的垂向流速分布。试验结果表明，受倒虹吸进口结构的影响，上游垂向流速分布呈现出明显的顶部流速降低和底部流速增加的现象，且淹没度越大、距离倒虹吸进口越近，上述趋势越显著；采用明渠对数型流速分布描述上述垂向流速分布时，其计算误差呈抛物线型分布，采用指数项修正后，新的修正公式可用于计算倒虹吸进口上游垂向流速分布。

English Abstract

Distribution of vertical flow velocity upstream of an inverted siphon in the Middle Route of South-to-North Water Diversion Project

State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China

Funds: The study is financially supported by the National Key R&D Program of China (No. 2016YFC0401706) and the National Natural Science Foundation of China (No. 51679263).

Received Date: 2017-06-19
Publish Date: 2017-11-25

Keywords:

Abstract: The inverted siphon is a commonly used hydraulic structure in water diversion projects.Therefore, research on the vertical flow velocity distribution in the upstream of the inverted siphon inlet is important to elucidating its hydraulic performance.The typical inverted siphon of the Tanghe River in the Middle Route of the South-to-North Water Diversion Project was taken as the research object.Generalized hydraulic model experiments were carried out, and measurements were performed to obtain the vertical velocity distribution in the upstream of the inverted siphon inlet under different combinations of water depth and flow discharge, using an acoustic doppler velocimeter.The experimental results demonstrated that owing to the influence of the inverted siphon inlet structure, the upstream vertical velocity distribution largely exhibited lower velocity at the top and higher velocity at the bottom.Moreover, for greater submergence and closer to the inverted siphon inlet, the aforementioned trend was more evident.Further, when the above vertical velocity distribution was represented using the open-channel logarithmic velocity distribution approach, its computing error exhibited a parabolic distribution.When the open-channel logarithmic velocity distribution formula was improved using exponential terms, a new modified formula was obtained, which can be employed to compute the vertical velocity distribution in the upstream of the inverted siphon inlet.

引用本文:

Citation:

FU Hui, GUO Xinlei, YANG Kailin, GUO Yongxin, WANG Tao. Distribution of vertical flow velocity upstream of an inverted siphon in the Middle Route of South-to-North Water Diversion Project[J]. Advances in Water Science, 2017, 28(6): 922-929. doi: 10.14042/j.cnki.32.1309.2017.06.013