Article(id=1222940987085807994, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1222940980886626474, articleNumber=null, orderNo=null, doi=10.20040/j.cnki.1000-7709.2023.20222608, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1671379200000, receivedDateStr=2022-12-19, revisedDate=1675612800000, revisedDateStr=2023-02-06, acceptedDate=null, acceptedDateStr=null, onlineDate=1769501452465, onlineDateStr=2026-01-27, pubDate=1700841600000, pubDateStr=2023-11-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769501452465, onlineIssueDateStr=2026-01-27, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769501452465, creator=13041195026, updateTime=1769501452465, updator=13041195026, issue=Issue{id=1222940980886626474, tenantId=1146029695717560320, journalId=1205116964453384197, year='2023', volume='41', issue='11', pageStart='1', pageEnd='226', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1769501450987, creator=13041195026, updateTime=1769501450987, updator=13041195026, preIssue=null, nextIssue=null, ext=null, issueFiles=null}, startPage=111, endPage=115, ext={EN=ArticleExt(id=1222940988243435918, articleId=1222940987085807994, tenantId=1146029695717560320, journalId=1205116964453384197, language=EN, title=Experimental Study on Hydrodynamic Characteristics of Open Channel Tributary Intersection Area Based on PIV Technology, columnId=1222925283779400191, journalTitle=Water Resources and Power, columnName=WATER CONSERVANCY AND HYDROPOWER ENGINEERING, runingTitle=null, highlight=null, articleAbstract=

Under the condition of low flow ratio, the flow structure of the inlet area of tributaries is very complicated. Based on physical model test and PIV particle image velocimetry technology, the average velocity distribution and three-dimensional velocity spatial distribution of open channel tributaries under different intersection conditions were observed, and the variation law of the flow field of tributaries was analyzed. The results show that when the confluence is relatively small, the surface water of the tributaries will have reverse reflux phenomenon to varying degrees due to the top supporting effect of the main stream water, while the bottom water flows downstream to the main stream, and there is a relatively obvious oblique mixing interface. With the increase of the confluence ratio, the influence of the main stream on the flow structure of the left bank of the tributary decreases gradually. When the intersection angle is 30° and 90°, the water flow structure near the right bank section is most affected by the water top support of the main flow. When the intersection angle is 150°, the tributaries are basically in reverse reflux state, and the maximum reflux velocity area is formed at the intersection. The results can provide theoretical support for the study of frequent bloom caused by nutrient enrichment in tributaries of reservoir area.

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针对低流量比条件下明槽干支流交汇支流汇入区水流结构十分复杂的问题,基于物理模型试验的方法,采用PIV粒子图像测速技术观测不同交汇条件下明槽支流时均流速及三维流速空间分布,分析支流流场的变化特征。结果表明,汇流比较小时,由于干流水体的顶托作用,支流表层水体会出现不同程度上的回流现象,底层水体顺流汇入干流,且有较为明显的斜向混合界面;随着汇流比的增大,干流对支流左岸水流结构影响逐渐减小。在交汇角为30°、90°时,靠近支流右岸的水流结构受干流水体顶托作用影响最大;在交汇角为150°时,支流基本处于回流状态,交汇口处形成最大回流流速区。研究结果可为库区支流营养盐富集导致水华频发等研究提供理论支撑。

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尹炜(1978-),男,正高级工程师,研方向为水资源保护,E-mail:
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吴菲(1997-),男,硕士研究生,研究方向为水环境模拟,E-mail:

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吴菲(1997-),男,硕士研究生,研究方向为水环境模拟,E-mail:

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吴菲(1997-),男,硕士研究生,研究方向为水环境模拟,E-mail:

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吴菲 1 , 白凤朋 2, 3 , 陈雪妮 4 , 刘瑞芬 1 , 杨中华 4 , 王超 2, 3 , 尹炜 2, 3
水电能源科学 | 水利水电工程 2023,41(11): 111-115
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水电能源科学 | 水利水电工程 2023, 41(11): 111-115
明槽支流交汇区水动力特性PIV试验研究
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吴菲1 , 白凤朋2, 3, 陈雪妮4, 刘瑞芬1, 杨中华4, 王超2, 3, 尹炜2, 3
作者信息
  • 1.湖北工业大学土木建筑与环境学院,湖北 武汉 430068
  • 2.长江水资源保护科学研究院,湖北 武汉 430051
  • 3.长江水利委员会湖库水源地面源污染生态调控重点实验室,湖北 武汉 430051
  • 4.武汉大学水资源与水电工程科学国家重点实验室,湖北 武汉 430072
  • 吴菲(1997-),男,硕士研究生,研究方向为水环境模拟,E-mail:

通讯作者:

尹炜(1978-),男,正高级工程师,研方向为水资源保护,E-mail:
Experimental Study on Hydrodynamic Characteristics of Open Channel Tributary Intersection Area Based on PIV Technology
Fei WU1 , Feng-peng BAI2, 3, Xue-ni CHEN4, Rui-fen LIU1, Zhong-hua YANG4, Chao WANG2, 3, Wei YIN2, 3
Affiliations
  • 1.College of Civil Engineering and Environment, Hubei University of Technology, Wuhan 430068, China
  • 2.Changjiang Water Resources Protection Institute, Wuhan 430051, China
  • 3.Key Laboratory of Ecological Regulation of Non-point Source Pollution in Lake and Reservoir Water Sources, Changjiang Water Resources Commission, Wuhan 430051, China
  • 4.State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China
出版时间: 2023-11-25 doi: 10.20040/j.cnki.1000-7709.2023.20222608
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针对低流量比条件下明槽干支流交汇支流汇入区水流结构十分复杂的问题,基于物理模型试验的方法,采用PIV粒子图像测速技术观测不同交汇条件下明槽支流时均流速及三维流速空间分布,分析支流流场的变化特征。结果表明,汇流比较小时,由于干流水体的顶托作用,支流表层水体会出现不同程度上的回流现象,底层水体顺流汇入干流,且有较为明显的斜向混合界面;随着汇流比的增大,干流对支流左岸水流结构影响逐渐减小。在交汇角为30°、90°时,靠近支流右岸的水流结构受干流水体顶托作用影响最大;在交汇角为150°时,支流基本处于回流状态,交汇口处形成最大回流流速区。研究结果可为库区支流营养盐富集导致水华频发等研究提供理论支撑。

PIV  /  干支流交汇  /  流场变化  /  水动力特性

Under the condition of low flow ratio, the flow structure of the inlet area of tributaries is very complicated. Based on physical model test and PIV particle image velocimetry technology, the average velocity distribution and three-dimensional velocity spatial distribution of open channel tributaries under different intersection conditions were observed, and the variation law of the flow field of tributaries was analyzed. The results show that when the confluence is relatively small, the surface water of the tributaries will have reverse reflux phenomenon to varying degrees due to the top supporting effect of the main stream water, while the bottom water flows downstream to the main stream, and there is a relatively obvious oblique mixing interface. With the increase of the confluence ratio, the influence of the main stream on the flow structure of the left bank of the tributary decreases gradually. When the intersection angle is 30° and 90°, the water flow structure near the right bank section is most affected by the water top support of the main flow. When the intersection angle is 150°, the tributaries are basically in reverse reflux state, and the maximum reflux velocity area is formed at the intersection. The results can provide theoretical support for the study of frequent bloom caused by nutrient enrichment in tributaries of reservoir area.

PIV  /  confluence of main stream and tributary stream  /  change of flow field  /  hydraulic characteristics
吴菲, 白凤朋, 陈雪妮, 刘瑞芬, 杨中华, 王超, 尹炜. 明槽支流交汇区水动力特性PIV试验研究. 水电能源科学, 2023 , 41 (11) : 111 -115 . DOI: 10.20040/j.cnki.1000-7709.2023.20222608
Fei WU, Feng-peng BAI, Xue-ni CHEN, Rui-fen LIU, Zhong-hua YANG, Chao WANG, Wei YIN. Experimental Study on Hydrodynamic Characteristics of Open Channel Tributary Intersection Area Based on PIV Technology[J]. Water Resources and Power, 2023 , 41 (11) : 111 -115 . DOI: 10.20040/j.cnki.1000-7709.2023.20222608
  • 国家自然科学基金项目(U2040210)
2023年第41卷第11期
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doi: 10.20040/j.cnki.1000-7709.2023.20222608
  • 接收时间:2022-12-19
  • 首发时间:2026-01-27
  • 出版时间:2023-11-25
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  • 收稿日期:2022-12-19
  • 修回日期:2023-02-06
基金
国家自然科学基金项目(U2040210)
作者信息
    1.湖北工业大学土木建筑与环境学院,湖北 武汉 430068
    2.长江水资源保护科学研究院,湖北 武汉 430051
    3.长江水利委员会湖库水源地面源污染生态调控重点实验室,湖北 武汉 430051
    4.武汉大学水资源与水电工程科学国家重点实验室,湖北 武汉 430072

通讯作者:

尹炜(1978-),男,正高级工程师,研方向为水资源保护,E-mail:
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2种不同金属材料的力学参数

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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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