Article(id=1317484305429934138, tenantId=1146029695717560320, journalId=1316781260334530699, issueId=1317484285729297022, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1005-0329.2025.01.009, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1706716800000, receivedDateStr=2024-02-01, revisedDate=1715097600000, revisedDateStr=2024-05-08, acceptedDate=null, acceptedDateStr=null, onlineDate=1792042336088, onlineDateStr=2026-10-15, pubDate=1738166400000, pubDateStr=2025-01-30, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792042336088, onlineIssueDateStr=2026-10-15, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792042336088, creator=13701087609, updateTime=1792042336088, updator=13701087609, issue=Issue{id=1317484285729297022, tenantId=1146029695717560320, journalId=1316781260334530699, year='2025', volume='53', issue='1', pageStart='1', pageEnd='118', issueExtLink='null', onlineDate='null', pubDate='1738166400000', pubDateStr='2025-01-30', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1792042331392, creator='13701087609', updateTime=1792143991750, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1317910680238411814, tenantId=1146029695717560320, journalId=1316781260334530699, issueId=1317484285729297022, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1317910680238411815, tenantId=1146029695717560320, journalId=1316781260334530699, issueId=1317484285729297022, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=68, endPage=75, ext={EN=ArticleExt(id=1317484307145404475, articleId=1317484305429934138, tenantId=1146029695717560320, journalId=1316781260334530699, language=EN, title=Research on the internal flow state of bent pipes and optimization of component drag reductio, columnId=null, journalTitle=Fluid Machinery, columnName=null, runingTitle=null, highlight=null, articleAbstract=

In order to provide theoretical guidance for pipeline layout and optimized operation in engineering design, and reduce building operation energy consumption, the variations in local resistance coefficients, fluid motion states, and viscous dissipation of elbows under different pipe diameters and velocities were compared by the method of combining the experiments and numerical simulation, and the groove method was utilized to optimize the components of the elbows. The results reveal that as the pipe diameter increases, the influence of deformed components on the fluid within the elbow gradually decreases, and the area of the low-velocity zone in both the turning section and downstream straight pipe section gradually decreases. At an inlet velocity of 1.1 m/s, elbows of varying diameters exhibit deviations from the established power function law regarding local resistance coefficients. Specifically, elbows ranging from DN40 to DN65 demonstrate nearly identical resistance coefficients, as do those from DN100 to DN125. This phenomenon is attributed to the internal fluid dynamics and stress distribution within the elbows. Using the aforementioned theoretical study for component optimization, adding grooves in the separation area of the material wall can reduce the local resistance loss of the elbow, reduce the range of low-velocity areas, and reduce mechanical energy consumption as well. In the elbow with added grooves, the optimization of local resistance is most significant at a smaller inlet flow rate of v=0.5 m/s, the local resistance is reduced by 63.96%. These research findings offer valuable insights for the design layout and structural optimization of elbows in engineering applications.

, authors=Jie WANG, Chongfang SONG, Wuxuan PAN, Yajing YAN, Ke ZHAO, authorsList=Jie WANG, Chongfang SONG, Wuxuan PAN, Yajing YAN, Ke ZHAO, authorCompany=null, correspAuthors=Chongfang SONG, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1317484307367702588, articleId=1317484305429934138, tenantId=1146029695717560320, journalId=1316781260334530699, language=CN, title=弯管内部流场及减阻优化研究, columnId=1317484287230853622, journalTitle=流体机械, columnName=设计计算, runingTitle=null, highlight=null, articleAbstract=

为了给管道的布置和优化运行提供理论指导，降低建筑运行能耗，通过试验和数值模拟相结合的方法，比较了在不同管径和速度下弯管局部阻力系数、流体运动状态以及黏性耗散的变化，并利用沟槽法对弯管进行构件优化。结果表明：随着管径增大，形变构件对弯管内流体的影响逐渐减小，转折段和下游直管段内低速区面积逐步减小。当入口速度为1.1 m/s时，不同管径弯管的局部阻力系数未完全按照已有的幂函数规律变化，DN40~DN65弯管的局部阻力系数大小近似相等，DN100~DN125局部阻力系数也大致相等，这与其内部流体运动状态和受力有关。利用上述理论研究进行构件优化，在质壁分离区域加入沟槽，可减少弯管局部阻力损失，同时缩减低速区域范围，减小机械能消耗。加入沟槽后的弯管，在较小的入口流速v=0.5 m/s处局部阻力的优化最为明显，局部阻力降低了63.96%。研究结果可为工程中弯管的设计布置以及结构优化提供参考。

, authors=王捷, 宋翀芳, 潘武轩, 闫亚婧, 赵可, authorsList=王捷, 宋翀芳, 潘武轩, 闫亚婧, 赵可, authorCompany=null, correspAuthors=宋翀芳, authorNote=, correspAuthorsNote=, copyrightStatement=作者向本刊所投稿件一经本刊录用，则该论文的复制权、发行权、信息网络传播权、翻译权、汇编权等权利视为自动转让给本刊。本刊为国内各主要数据库收录期刊，本刊所发表的稿件将同时通过互联网进行网络出版或提供信息服务。, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=irbqzkXyHe89DAKuRh43wA==, magXml=3qUrcbm56UZazih+0hbhBg==, pdfUrl=null, pdf=dVX8sKAU3rnyEwm/bCv62Q==, pdfFileSize=5495514, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=QVBOhSizh9HtTEIMBdAutg==, mapNumber=null, fund=null)}, authors=[Author(id=1317484307652915265, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1317484305429934138, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=787844992@qq.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1317484307728412739, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1317484305429934138, authorId=1317484307652915265, language=EN, stringName=Jie WANG, firstName=Jie, middleName=null, lastName=WANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=¹School of Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1317484307799715909, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1317484305429934138, authorId=1317484307652915265, language=CN, stringName=王捷, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=¹太原理工大学 土木工程学院，太原 030024, bio={"content":"

王捷（1998），女，硕士研究生，研究方向为局部构件流动减阻，E-mail:787844992@qq.com。

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王捷（1998），女，硕士研究生，研究方向为局部构件流动减阻，E-mail:787844992@qq.com。

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