Article(id=1223193063611285658, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223193053830169317, articleNumber=null, orderNo=null, doi=10.20040/j.cnki.1000-7709.2023.20220463, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1647014400000, receivedDateStr=2022-03-12, revisedDate=1649952000000, revisedDateStr=2022-04-15, acceptedDate=null, acceptedDateStr=null, onlineDate=1769561552193, onlineDateStr=2026-01-28, pubDate=1674576000000, pubDateStr=2023-01-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769561552193, onlineIssueDateStr=2026-01-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769561552193, creator=13701087609, updateTime=1769561552193, updator=13701087609, issue=Issue{id=1223193053830169317, tenantId=1146029695717560320, journalId=1205116964453384197, year='2023', volume='41', issue='1', 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=1769561549861, creator=13701087609, updateTime=1769567790701, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1223219229885857794, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223193053830169317, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1223219229885857795, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223193053830169317, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=176, endPage=180, ext={EN=ArticleExt(id=1223193064404009142, articleId=1223193063611285658, tenantId=1146029695717560320, journalId=1205116964453384197, language=EN, title=Study on Flow Characteristics of Plane S-type Axial Extension Tubular Pump, columnId=1222925284869922957, journalTitle=Water Resources and Power, columnName=ELECTROMECHANICS AND CONTROL ENGINEERING, runingTitle=null, highlight=null, articleAbstract=

In order to analyze the flow characteristics of the plane S-type axial extension tubular pump unit, the software CFX was used to conduct three-dimensional full channel numerical simulation, and the energy gradient theory was used to analyze the flow characteristics of pump unit under different working conditions. The results show that under different flow conditions, the water flow in the inlet passage of the plane S-type axial extension tubular pump is very smooth, and the overall difference is small. The flow pattern in the outlet channel is quite different, and the smaller the flow rate is, the worse the flow pattern in the outlet channel is. The pressure pulsation at the same position in the plane S-type axial extension tubular pump unit is the largest under low flow conditions. The difference of energy gradient in the outlet channel is the largest under the condition of small flow, which indicates that a large energy loss will occur in the outlet channel under this condition. When designing the outlet passage of the plane S-type axial extension tubular pump unit, the length of the smooth section of the outlet passage should be increased as much as possible to ensure the uniform distribution of energy gradient. The research results can provide theoretical guidance for better understanding of the plane S-type axial extension pump device and optimization design.

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为分析平面S型轴伸贯流泵装置泵内流动特性,采用软件CFX对平面S型泵装置开展三维全流道数值模拟,并采用能量梯度理论分析不同工况下泵装置内的流动特性。结果表明,不同流量工况下平面S型轴伸贯流泵装置进水流道内的水流均非常平顺,整体差异较小。出水流道内的水流流态差别较大,流量越小出水流道内流态越差。小流量工况下平面S型轴伸贯流泵装置内相同位置的压力脉动最大。小流量工况下出水流道内能量梯度差异最大,说明此工况下出水流道内会产生较大的能量损失。平面S型轴伸贯流泵装置出水流道设计时应尽量增加出水流道的平顺段长度,保证能量梯度分布均匀。研究结果为深入了解平面S型轴伸泵装置和优化设计提供了理论指导。

, correspAuthors=null, authorNote=null, correspAuthorsNote=
严杰(1992-),男,工程师,研究方向为流体机械内部流动分析,E-mail:
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吴泽昊(1991-),男,工程师,研究方向为流体机械内部流动分析,E-mail:

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吴泽昊(1991-),男,工程师,研究方向为流体机械内部流动分析,E-mail:

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吴泽昊(1991-),男,工程师,研究方向为流体机械内部流动分析,E-mail:

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平面S型轴伸贯流泵装置泵内流动特性研究
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吴泽昊 , 严杰
水电能源科学 | 机电与控制工程 2023,41(1): 176-180
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水电能源科学 | 机电与控制工程 2023, 41(1): 176-180
平面S型轴伸贯流泵装置泵内流动特性研究
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吴泽昊 , 严杰
作者信息
  • 扬州市勘测设计研究院有限公司,江苏 扬州 225007
  • 吴泽昊(1991-),男,工程师,研究方向为流体机械内部流动分析,E-mail:

通讯作者:

严杰(1992-),男,工程师,研究方向为流体机械内部流动分析,E-mail:
Study on Flow Characteristics of Plane S-type Axial Extension Tubular Pump
Ze-hao WU , Jie YAN
Affiliations
  • Yangzhou Survey Design Research Institute Co, Ltd, Yangzhou 225007, China
出版时间: 2023-01-25 doi: 10.20040/j.cnki.1000-7709.2023.20220463
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为分析平面S型轴伸贯流泵装置泵内流动特性,采用软件CFX对平面S型泵装置开展三维全流道数值模拟,并采用能量梯度理论分析不同工况下泵装置内的流动特性。结果表明,不同流量工况下平面S型轴伸贯流泵装置进水流道内的水流均非常平顺,整体差异较小。出水流道内的水流流态差别较大,流量越小出水流道内流态越差。小流量工况下平面S型轴伸贯流泵装置内相同位置的压力脉动最大。小流量工况下出水流道内能量梯度差异最大,说明此工况下出水流道内会产生较大的能量损失。平面S型轴伸贯流泵装置出水流道设计时应尽量增加出水流道的平顺段长度,保证能量梯度分布均匀。研究结果为深入了解平面S型轴伸泵装置和优化设计提供了理论指导。

平面S型轴伸贯流泵  /  能量梯度  /  压力脉动  /  流动特性  /  数值模拟

In order to analyze the flow characteristics of the plane S-type axial extension tubular pump unit, the software CFX was used to conduct three-dimensional full channel numerical simulation, and the energy gradient theory was used to analyze the flow characteristics of pump unit under different working conditions. The results show that under different flow conditions, the water flow in the inlet passage of the plane S-type axial extension tubular pump is very smooth, and the overall difference is small. The flow pattern in the outlet channel is quite different, and the smaller the flow rate is, the worse the flow pattern in the outlet channel is. The pressure pulsation at the same position in the plane S-type axial extension tubular pump unit is the largest under low flow conditions. The difference of energy gradient in the outlet channel is the largest under the condition of small flow, which indicates that a large energy loss will occur in the outlet channel under this condition. When designing the outlet passage of the plane S-type axial extension tubular pump unit, the length of the smooth section of the outlet passage should be increased as much as possible to ensure the uniform distribution of energy gradient. The research results can provide theoretical guidance for better understanding of the plane S-type axial extension pump device and optimization design.

plane S-type axial extension tubular pump  /  energy gradient  /  pressure pulsation  /  flow characteristics  /  numerical simulation
吴泽昊, 严杰. 平面S型轴伸贯流泵装置泵内流动特性研究. 水电能源科学, 2023 , 41 (1) : 176 -180 . DOI: 10.20040/j.cnki.1000-7709.2023.20220463
Ze-hao WU, Jie YAN. Study on Flow Characteristics of Plane S-type Axial Extension Tubular Pump[J]. Water Resources and Power, 2023 , 41 (1) : 176 -180 . DOI: 10.20040/j.cnki.1000-7709.2023.20220463
  • 江苏省自然科学基金项目(BK20190647)
2023年第41卷第1期
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文章信息
doi: 10.20040/j.cnki.1000-7709.2023.20220463
  • 接收时间:2022-03-12
  • 首发时间:2026-01-28
  • 出版时间:2023-01-25
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  • 收稿日期:2022-03-12
  • 修回日期:2022-04-15
基金
江苏省自然科学基金项目(BK20190647)
作者信息
    扬州市勘测设计研究院有限公司,江苏 扬州 225007

通讯作者:

严杰(1992-),男,工程师,研究方向为流体机械内部流动分析,E-mail:
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2种不同金属材料的力学参数

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Genus
种数
Number of
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Percentage of total
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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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