Article(id=1223202680777064456, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223202678788965355, articleNumber=null, orderNo=null, doi=10.20040/j.cnki.1000-7709.2023.20222579, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1670774400000, receivedDateStr=2022-12-12, revisedDate=1680451200000, revisedDateStr=2023-04-03, acceptedDate=null, acceptedDateStr=null, onlineDate=1769563845104, onlineDateStr=2026-01-28, pubDate=1703433600000, pubDateStr=2023-12-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769563845104, onlineIssueDateStr=2026-01-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769563845104, creator=13701087609, updateTime=1769563845104, updator=13701087609, issue=Issue{id=1223202678788965355, tenantId=1146029695717560320, journalId=1205116964453384197, year='2023', volume='41', issue='12', pageStart='1', pageEnd='228', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1769563844630, creator=13701087609, updateTime=1769563913308, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1223202966899901286, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223202678788965355, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1223202966899901287, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223202678788965355, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=207, endPage=210, ext={EN=ArticleExt(id=1223202681083248663, articleId=1223202680777064456, tenantId=1146029695717560320, journalId=1205116964453384197, language=EN, title=Analysis of Pressure Fluctuation Characteristics of Tidal Current Turbines, columnId=1222925284869922957, journalTitle=Water Resources and Power, columnName=ELECTROMECHANICS AND CONTROL ENGINEERING, runingTitle=null, highlight=null, articleAbstract=

Pressure fluctuation in the flow field around a tidal current turbine is one of the key factors affecting the safe and stable operation of the turbine. To evaluate the effects of the duct and the duct-to-rotor clearance ratio δ on the pressure fluctuation characteristics of the tidal current turbine, three-dimensional transient CFD methods and slip-grid techniques were used to perform three-dimensional numerical simulations of the bare turbine and the ducted turbine with the blade tip clearance of δ=0.02D and δ=0.06D, respectively, under the optimal operating conditions (TTSR=4). By analyzing the unsteady flow phenomenon of the flow field around the turbine, the pressure pulsation and frequency-domain vibration characteristics of the turbine under three different working conditions were obtained. The results show that the pressure fluctuation amplitude of the turbine is basically increasing from the root to the tip of the blade; The addition of a duct can effectively reduce the pressure fluctuation amplitude of the turbine; δ has less impact on the pressure fluctuation coefficient of the turbine and more impact on the vibration characteristics in the frequency domain of the pressure fluctuation; The main frequency of the pressure fluctuation of the turbine is mainly concentrated near the leaf frequency of the corresponding operating conditions. In addition, it is also found that the pressure fluctuation of turbine blade suction surface is stronger than the pressure surface, and the addition of duct can effectively reduce this fluctuation.

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潮流能涡轮机周围流场的压力脉动是影响涡轮机安全稳定运行的关键因素之一。为评估导管及导管喉部与叶轮间的间隙比δ对潮流能涡轮机压力脉动特性的影响,采用三维瞬态CFD方法和滑移网格技术对最优叶尖速比状态(TTSR=4)下的裸涡轮机及间隙比分别为δ=0.02D、0.06D的导管涡轮机进行了三维数值模拟,通过分析涡轮机叶轮周围流场的非定常流动现象,分别得到了3种不同工况下涡轮机叶轮各监测点的压力脉动和频域振动特性变化规律。结果表明,涡轮机的压力脉动幅值由叶根到叶尖基本均呈递增趋势;加装导管可有效降低涡轮机压力脉动幅值;δ对涡轮机叶轮压力脉动系数影响较小,对压力脉动频域振动特性影响较大;涡轮机叶轮的压力脉动主频主要集中在相应工况的叶频附近;涡轮机叶片吸力面的压力脉动较压力面强烈,加装导管后可有效降低这种脉动。

, correspAuthors=null, authorNote=null, correspAuthorsNote=
王文全(1977-),男,博士、教授、博导,研究方向为水力机械、多场耦合力学等,E-mail:
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虎周平(1994-),男,硕士研究生,研究方向为新能源流体机械,E-mail:

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虎周平(1994-),男,硕士研究生,研究方向为新能源流体机械,E-mail:

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虎周平(1994-),男,硕士研究生,研究方向为新能源流体机械,E-mail:

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潮流能涡轮机叶轮压力脉动特性分析
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虎周平 1 , 王文全 2a, 2b
水电能源科学 | 机电与控制工程 2023,41(12): 207-210
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水电能源科学 | 机电与控制工程 2023, 41(12): 207-210
潮流能涡轮机叶轮压力脉动特性分析
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虎周平1 , 王文全2a, 2b
作者信息
  • 1.中国电建集团昆明勘测设计研究院有限公司,云南 昆明 650051
  • 2.a.四川大学水力学与山区河流开发保护国家重点实验室,四川 成都 610065
  • 2.b.四川大学水利水电学院,四川 成都 610065
  • 虎周平(1994-),男,硕士研究生,研究方向为新能源流体机械,E-mail:

通讯作者:

王文全(1977-),男,博士、教授、博导,研究方向为水力机械、多场耦合力学等,E-mail:
Analysis of Pressure Fluctuation Characteristics of Tidal Current Turbines
Zhou-ping HU1 , Wen-quan WANG2a, 2b
Affiliations
  • 1.PowerChina Kunming Engineering Corporation Limited, Kunming 650051, China
  • 2a.State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China
  • 2b.College of Water Resource & Hydropower, Sichuan University, Chengdu 610065, China
出版时间: 2023-12-25 doi: 10.20040/j.cnki.1000-7709.2023.20222579
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潮流能涡轮机周围流场的压力脉动是影响涡轮机安全稳定运行的关键因素之一。为评估导管及导管喉部与叶轮间的间隙比δ对潮流能涡轮机压力脉动特性的影响,采用三维瞬态CFD方法和滑移网格技术对最优叶尖速比状态(TTSR=4)下的裸涡轮机及间隙比分别为δ=0.02D、0.06D的导管涡轮机进行了三维数值模拟,通过分析涡轮机叶轮周围流场的非定常流动现象,分别得到了3种不同工况下涡轮机叶轮各监测点的压力脉动和频域振动特性变化规律。结果表明,涡轮机的压力脉动幅值由叶根到叶尖基本均呈递增趋势;加装导管可有效降低涡轮机压力脉动幅值;δ对涡轮机叶轮压力脉动系数影响较小,对压力脉动频域振动特性影响较大;涡轮机叶轮的压力脉动主频主要集中在相应工况的叶频附近;涡轮机叶片吸力面的压力脉动较压力面强烈,加装导管后可有效降低这种脉动。

潮流能涡轮机  /  导管  /  叶尖间隙  /  压力脉动

Pressure fluctuation in the flow field around a tidal current turbine is one of the key factors affecting the safe and stable operation of the turbine. To evaluate the effects of the duct and the duct-to-rotor clearance ratio δ on the pressure fluctuation characteristics of the tidal current turbine, three-dimensional transient CFD methods and slip-grid techniques were used to perform three-dimensional numerical simulations of the bare turbine and the ducted turbine with the blade tip clearance of δ=0.02D and δ=0.06D, respectively, under the optimal operating conditions (TTSR=4). By analyzing the unsteady flow phenomenon of the flow field around the turbine, the pressure pulsation and frequency-domain vibration characteristics of the turbine under three different working conditions were obtained. The results show that the pressure fluctuation amplitude of the turbine is basically increasing from the root to the tip of the blade; The addition of a duct can effectively reduce the pressure fluctuation amplitude of the turbine; δ has less impact on the pressure fluctuation coefficient of the turbine and more impact on the vibration characteristics in the frequency domain of the pressure fluctuation; The main frequency of the pressure fluctuation of the turbine is mainly concentrated near the leaf frequency of the corresponding operating conditions. In addition, it is also found that the pressure fluctuation of turbine blade suction surface is stronger than the pressure surface, and the addition of duct can effectively reduce this fluctuation.

tidal current turbine  /  duct  /  blade tip clearance  /  pressure fluctuation
虎周平, 王文全. 潮流能涡轮机叶轮压力脉动特性分析. 水电能源科学, 2023 , 41 (12) : 207 -210 . DOI: 10.20040/j.cnki.1000-7709.2023.20222579
Zhou-ping HU, Wen-quan WANG. Analysis of Pressure Fluctuation Characteristics of Tidal Current Turbines[J]. Water Resources and Power, 2023 , 41 (12) : 207 -210 . DOI: 10.20040/j.cnki.1000-7709.2023.20222579
  • 国家自然科学基金项目(51479085)
2023年第41卷第12期
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doi: 10.20040/j.cnki.1000-7709.2023.20222579
  • 接收时间:2022-12-12
  • 首发时间:2026-01-28
  • 出版时间:2023-12-25
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  • 收稿日期:2022-12-12
  • 修回日期:2023-04-03
基金
国家自然科学基金项目(51479085)
作者信息
    1.中国电建集团昆明勘测设计研究院有限公司,云南 昆明 650051
    2.a.四川大学水力学与山区河流开发保护国家重点实验室,四川 成都 610065
    2.b.四川大学水利水电学院,四川 成都 610065

通讯作者:

王文全(1977-),男,博士、教授、博导,研究方向为水力机械、多场耦合力学等,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
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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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