Article(id=1222940987442323835, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1222940980886626474, articleNumber=null, orderNo=null, doi=10.20040/j.cnki.1000-7709.2023.20222597, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1671120000000, receivedDateStr=2022-12-16, revisedDate=1675180800000, revisedDateStr=2023-02-01, acceptedDate=null, acceptedDateStr=null, onlineDate=1769501452550, onlineDateStr=2026-01-27, pubDate=1700841600000, pubDateStr=2023-11-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769501452550, onlineIssueDateStr=2026-01-27, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769501452550, creator=13041195026, updateTime=1769501452550, 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=99, endPage=103, ext={EN=ArticleExt(id=1222940988306350484, articleId=1222940987442323835, tenantId=1146029695717560320, journalId=1205116964453384197, language=EN, title=Study on Aeration Characteristics of Grid Type Underflow Energy Dissipation, columnId=1222925283779400191, journalTitle=Water Resources and Power, columnName=WATER CONSERVANCY AND HYDROPOWER ENGINEERING, runingTitle=null, highlight=null, articleAbstract=

For underflow energy dissipation, the arrangement of the grille shortens the length of the stilling pool and makes it easier to adapt to changes in terrain conditions. The two-phase flow of water and gas in the round-bore Γ-shaped grille type stilling pool was numerically simulated by the aeration model in FLOW-3D. The results show that the concentration of longitudinal bottoming gas decreased (31.3% →8.0%) along the way, and decreased significantly at the grid position, the minimum number of holes in front of the grid (#6 section) was 5.6, the number of holes near the grid was about 9.0, and the number of holes behind the grid was much greater than 9.0. The bubble size near the bottom of the grid front axis increases along the course (0.9 mm→8.1 mm), and the bubble size of the near bottom plate after the grid decreases along the way (1.6 mm decreases to close to 0 mm). It can be considered that the bubbles with smaller diameters in large flow velocity areas play a major role in aeration corrosion reduction, which has obvious protective effect on the solid boundary of concrete, and the structure of the stilling pool including the grid is not easy to occur cavitation erosion damage.

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对于底流消能,格栅的布置能够缩短消力池长度,使其更容易适应地形条件的变化。为此,通过FLOW-3D中的掺气模型对圆孔Γ形格栅式消力池内水气两相流进行数值模拟。结果表明,纵向临底掺气浓度沿程递减(由31.3%减小到8.0%),在格栅位置出现明显下降,栅前(#6断面)临底空穴数最小为5.6,格栅附近空穴数均在9.0左右,栅后空穴数远大于9.0;栅前沿轴线方向近底气泡尺寸沿程增大(由0.9 mm增大到8.1 mm),栅后近底板气泡尺寸则沿程减小(由1.6 mm减小到接近0 mm);流速较大区域较小直径的气泡在掺气减蚀中起主要作用,对混凝土固体边界的保护作用明显,包括格栅在内的消力池结构不易发生空蚀破坏。

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邱勇(1971-),男,教授,研究方向为工程水力学,E-mail:
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葛亚飞(1995-),男,硕士研究生,研究方向为工程水力学,E-mail:

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葛亚飞(1995-),男,硕士研究生,研究方向为工程水力学,E-mail:

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格栅式底流消能掺气特性研究
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葛亚飞 1, 2 , 邱勇 1 , 何沛山 3 , 普进兵 1 , 和云秋 1
水电能源科学 | 水利水电工程 2023,41(11): 99-103
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水电能源科学 | 水利水电工程 2023, 41(11): 99-103
格栅式底流消能掺气特性研究
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葛亚飞1, 2 , 邱勇1 , 何沛山3, 普进兵1, 和云秋1
作者信息
  • 1.云南农业大学水利学院,云南 昆明 650201
  • 2.南水北调东线江苏水源有限责任公司宝应站管理所,江苏 扬州 225000
  • 3.昆明红昭水利水电工程设计咨询有限公司,云南 昆明 650020
  • 葛亚飞(1995-),男,硕士研究生,研究方向为工程水力学,E-mail:

通讯作者:

邱勇(1971-),男,教授,研究方向为工程水力学,E-mail:
Study on Aeration Characteristics of Grid Type Underflow Energy Dissipation
Ya-fei GE1, 2 , Yong QIU1 , Pei-shan HE3, Jin-bing PU1, Yun-qiu HE1
Affiliations
  • 1.College of Water Conservancy, Yunnan Agricultural University, Kunming 650201, China
  • 2.Baoying Station Management Office of Jiangsu Water Source Co., Ltd. on the East Line of the South to North Water Diversion Project, Yangzhou 225000, China
  • 3.Kunming Hongzhao Water Conservancy and Hydropower Engineering Design and Consulting Co., Ltd., Kunming 650020, China
出版时间: 2023-11-25 doi: 10.20040/j.cnki.1000-7709.2023.20222597
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对于底流消能,格栅的布置能够缩短消力池长度,使其更容易适应地形条件的变化。为此,通过FLOW-3D中的掺气模型对圆孔Γ形格栅式消力池内水气两相流进行数值模拟。结果表明,纵向临底掺气浓度沿程递减(由31.3%减小到8.0%),在格栅位置出现明显下降,栅前(#6断面)临底空穴数最小为5.6,格栅附近空穴数均在9.0左右,栅后空穴数远大于9.0;栅前沿轴线方向近底气泡尺寸沿程增大(由0.9 mm增大到8.1 mm),栅后近底板气泡尺寸则沿程减小(由1.6 mm减小到接近0 mm);流速较大区域较小直径的气泡在掺气减蚀中起主要作用,对混凝土固体边界的保护作用明显,包括格栅在内的消力池结构不易发生空蚀破坏。

气泡尺度  /  湍动强度  /  掺气减蚀  /  底流消能  /  数值模拟

For underflow energy dissipation, the arrangement of the grille shortens the length of the stilling pool and makes it easier to adapt to changes in terrain conditions. The two-phase flow of water and gas in the round-bore Γ-shaped grille type stilling pool was numerically simulated by the aeration model in FLOW-3D. The results show that the concentration of longitudinal bottoming gas decreased (31.3% →8.0%) along the way, and decreased significantly at the grid position, the minimum number of holes in front of the grid (#6 section) was 5.6, the number of holes near the grid was about 9.0, and the number of holes behind the grid was much greater than 9.0. The bubble size near the bottom of the grid front axis increases along the course (0.9 mm→8.1 mm), and the bubble size of the near bottom plate after the grid decreases along the way (1.6 mm decreases to close to 0 mm). It can be considered that the bubbles with smaller diameters in large flow velocity areas play a major role in aeration corrosion reduction, which has obvious protective effect on the solid boundary of concrete, and the structure of the stilling pool including the grid is not easy to occur cavitation erosion damage.

bubble scale  /  Turbulence intensity  /  doped corrosion reduction  /  energy dissipation by bottom flow  /  numerical simulation
葛亚飞, 邱勇, 何沛山, 普进兵, 和云秋. 格栅式底流消能掺气特性研究. 水电能源科学, 2023 , 41 (11) : 99 -103 . DOI: 10.20040/j.cnki.1000-7709.2023.20222597
Ya-fei GE, Yong QIU, Pei-shan HE, Jin-bing PU, Yun-qiu HE. Study on Aeration Characteristics of Grid Type Underflow Energy Dissipation[J]. Water Resources and Power, 2023 , 41 (11) : 99 -103 . DOI: 10.20040/j.cnki.1000-7709.2023.20222597
  • 云南省兴滇英才支持计划(202201788)
2023年第41卷第11期
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doi: 10.20040/j.cnki.1000-7709.2023.20222597
  • 接收时间:2022-12-16
  • 首发时间:2026-01-27
  • 出版时间:2023-11-25
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  • 收稿日期:2022-12-16
  • 修回日期:2023-02-01
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云南省兴滇英才支持计划(202201788)
作者信息
    1.云南农业大学水利学院,云南 昆明 650201
    2.南水北调东线江苏水源有限责任公司宝应站管理所,江苏 扬州 225000
    3.昆明红昭水利水电工程设计咨询有限公司,云南 昆明 650020

通讯作者:

邱勇(1971-),男,教授,研究方向为工程水力学,E-mail:
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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
total species (%)

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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