Article(id=1223204294543917223, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223204286050452333, articleNumber=null, orderNo=null, doi=10.20040/j.cnki.1000-7709.2023.20221322, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1656259200000, receivedDateStr=2022-06-27, revisedDate=1659283200000, revisedDateStr=2022-08-01, acceptedDate=null, acceptedDateStr=null, onlineDate=1769564229856, onlineDateStr=2026-01-28, pubDate=1684944000000, pubDateStr=2023-05-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769564229856, onlineIssueDateStr=2026-01-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769564229856, creator=13701087609, updateTime=1769564229856, updator=13701087609, issue=Issue{id=1223204286050452333, tenantId=1146029695717560320, journalId=1205116964453384197, year='2023', volume='41', issue='5', pageStart='1', pageEnd='220', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1769564227831, creator=13701087609, updateTime=1769567742010, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1223219026013323264, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223204286050452333, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1223219026013323265, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223204286050452333, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=89, endPage=92, ext={EN=ArticleExt(id=1223204295340835059, articleId=1223204294543917223, tenantId=1146029695717560320, journalId=1205116964453384197, language=EN, title=Research on Hydraulic Characteristics of Surge with Long Connecting Pipe, columnId=1222925283779400191, journalTitle=Water Resources and Power, columnName=WATER CONSERVANCY AND HYDROPOWER ENGINEERING, runingTitle=null, highlight=null, articleAbstract=

The downstream surge chamber of a certain pumped storage power station adopts impedance with upper chamber layout. The tailrace tunnel is connected with the connecting pipe through right angle bifurcated pipe and bend. The layout type is special and the water flow conditions are complex. In order to study its hydraulic characteristics, a three-dimensional flow field mathematical model of the connecting pipe at the bottom of the surge chamber was established, and the variation law of hydraulic characteristics under different diversion ratio and confluence ratio was studied. The results show that for the resistance loss of surge chamber with complex bottom flow, the three-dimensional numerical simulation can achieve better simulation effect, and the calculation results are in good agreement with the theoretical analysis results. Because the elbow at the bottom of the surge chamber, the sudden expansion and contraction between the connecting pipe and the big well will cause additional hydraulic losses, its head loss coefficient is greater than that of the conventional impedance surge chamber, and the flow coefficient is smaller than that of the separate impedance hole.

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某抽水蓄能电站下游调压室采用阻抗+上室式布置,尾水洞与连接管通过直角岔管和弯道连接,布置型式特殊,水流条件复杂。为研究其水力特性,建立了调压室底部连接管三维流场数学模型,研究了不同分流比、汇流比条件下水力特性的变化规律。结果表明,对于底部流动复杂的调压室阻力损失而言,三维数值模拟能取得较好的仿真效果,计算结果与理论分析结果吻合良好。由于调压室底部弯管、连接管与大井之间的突扩、突缩等均会引起额外的水力损失,其水头损失系数大于常规阻抗调压室,流量系数较单独的阻抗孔更小。

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李煜(1983-),男,工程师,研究方向为水力学,E-mail:

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李煜(1983-),男,工程师,研究方向为水力学,E-mail:

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李煜(1983-),男,工程师,研究方向为水力学,E-mail:

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带长连接管的调压室水力特性研究
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李煜 , 杨绍佳
水电能源科学 | 水利水电工程 2023,41(5): 89-92
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水电能源科学 | 水利水电工程 2023, 41(5): 89-92
带长连接管的调压室水力特性研究
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李煜 , 杨绍佳
作者信息
  • 中国电建集团华东勘测设计研究院有限公司,浙江 杭州 311122
  • 李煜(1983-),男,工程师,研究方向为水力学,E-mail:

Research on Hydraulic Characteristics of Surge with Long Connecting Pipe
Yu LI , Shao-jia YANG
Affiliations
  • PowerChina Huadong Engineering Corporation Limited, Hangzhou 311122, China
出版时间: 2023-05-25 doi: 10.20040/j.cnki.1000-7709.2023.20221322
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某抽水蓄能电站下游调压室采用阻抗+上室式布置,尾水洞与连接管通过直角岔管和弯道连接,布置型式特殊,水流条件复杂。为研究其水力特性,建立了调压室底部连接管三维流场数学模型,研究了不同分流比、汇流比条件下水力特性的变化规律。结果表明,对于底部流动复杂的调压室阻力损失而言,三维数值模拟能取得较好的仿真效果,计算结果与理论分析结果吻合良好。由于调压室底部弯管、连接管与大井之间的突扩、突缩等均会引起额外的水力损失,其水头损失系数大于常规阻抗调压室,流量系数较单独的阻抗孔更小。

调压室  /  长连接管  /  三维流场数值模拟  /  水头损失系数

The downstream surge chamber of a certain pumped storage power station adopts impedance with upper chamber layout. The tailrace tunnel is connected with the connecting pipe through right angle bifurcated pipe and bend. The layout type is special and the water flow conditions are complex. In order to study its hydraulic characteristics, a three-dimensional flow field mathematical model of the connecting pipe at the bottom of the surge chamber was established, and the variation law of hydraulic characteristics under different diversion ratio and confluence ratio was studied. The results show that for the resistance loss of surge chamber with complex bottom flow, the three-dimensional numerical simulation can achieve better simulation effect, and the calculation results are in good agreement with the theoretical analysis results. Because the elbow at the bottom of the surge chamber, the sudden expansion and contraction between the connecting pipe and the big well will cause additional hydraulic losses, its head loss coefficient is greater than that of the conventional impedance surge chamber, and the flow coefficient is smaller than that of the separate impedance hole.

surge  /  long connecting pipe  /  numerical simulation of three-dimensional flow field  /  head loss coefficient
李煜, 杨绍佳. 带长连接管的调压室水力特性研究. 水电能源科学, 2023 , 41 (5) : 89 -92 . DOI: 10.20040/j.cnki.1000-7709.2023.20221322
Yu LI, Shao-jia YANG. Research on Hydraulic Characteristics of Surge with Long Connecting Pipe[J]. Water Resources and Power, 2023 , 41 (5) : 89 -92 . DOI: 10.20040/j.cnki.1000-7709.2023.20221322
  • 浙江省自然科学基金项目(LQ23E090002)
2023年第41卷第5期
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doi: 10.20040/j.cnki.1000-7709.2023.20221322
  • 接收时间:2022-06-27
  • 首发时间:2026-01-28
  • 出版时间:2023-05-25
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  • 收稿日期:2022-06-27
  • 修回日期:2022-08-01
基金
浙江省自然科学基金项目(LQ23E090002)
作者信息
    中国电建集团华东勘测设计研究院有限公司,浙江 杭州 311122
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
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Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
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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