Article(id=1301954870710395281, tenantId=1146029695717560320, journalId=1301849854269554754, issueId=1301954868281889048, articleNumber=null, orderNo=null, doi=10.11729/syltlx20250101, pmid=null, cstr=32472.14.syltlx20250101, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1762099200000, receivedDateStr=2025-11-03, revisedDate=1770048000000, revisedDateStr=2026-02-03, acceptedDate=1770912000000, acceptedDateStr=2026-02-13, onlineDate=1788339830329, onlineDateStr=2026-09-02, pubDate=1782316800000, pubDateStr=2026-06-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1788339830329, onlineIssueDateStr=2026-09-02, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1788339830329, creator=13701087609, updateTime=1788339830329, updator=13701087609, issue=Issue{id=1301954868281889048, tenantId=1146029695717560320, journalId=1301849854269554754, year='2026', volume='40', issue='3', pageStart='1', pageEnd='122', issueExtLink='null', onlineDate='null', pubDate='1782316800000', pubDateStr='2026-06-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1788339829750, creator='13701087609', updateTime=1788405138953, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1302228795092652288, tenantId=1146029695717560320, journalId=1301849854269554754, issueId=1301954868281889048, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1302228795092652289, tenantId=1146029695717560320, journalId=1301849854269554754, issueId=1301954868281889048, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=29, endPage=38, ext={EN=ArticleExt(id=1301954870945276307, articleId=1301954870710395281, tenantId=1146029695717560320, journalId=1301849854269554754, language=EN, title=Experimental study on pipeline drag reduction characteristics based on polymer solution Injection, columnId=1301954870869778834, journalTitle=Journal of Experiments in Fluid Mechanics, columnName=Special Issue on Outstanding Papers at the 14th National Conference on Experimental Fluid Mechanics, runingTitle=null, highlight=null, articleAbstract=
Adding a trace amount of polymer into turbulent flow can significantly reduce wall friction. This drag reduction technique has been widely applied in fields such as fire-fighting, pipeline transportation, and biomedicine. Polyethylene oxide (PEO) is an efficient drag-reducing polymer, whose performance is affected by multiple parameters. In this study, a gravity-driven circulating pipe-flow system is employed to experimentally investigate the drag reduction characteristics of PEO solution injection in turbulent pipe flow. The effects of Reynolds number, injection angle (seven angles), injection rate and relative molecular mass (total of 7 kinds) on the drag reduction rate (RD) are systematically examined. A normalized polymer flux Kp, which is suitable for pipe flow, is proposed to collapse the experimental data. Results show that RD initially increases roughly linearly with lg Kp and then approaches a saturation level. This trend is analogous to the previously reported K-scaling law for polymer injection in turbulent boundary layers. Moreover, the dependence of RD on molecular weight exhibits an S-shaped trend. By fitting the data with a sigmoidal function, the optimal molecular weight range for maximum drag reduction can be predicted. These findings provide useful guidance for the optimization and prediction of polymer injection parameters in drag-reduced turbulent pipe flows.
, authors=Pengfei SHI
1, Haibao HU
1, Jun WEN
1, Hailang SUN
1, 2, Luo XIE
1, 3, 4, *, authorsList=Pengfei SHI, Haibao HU, Jun WEN, Hailang SUN, Luo XIE, authorCompany=null, correspAuthors=Luo XIE, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright ©2026 Journal of Experiments in Fluid Mechanics. All rights reserved., 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=1301954874384605607, articleId=1301954870710395281, tenantId=1146029695717560320, journalId=1301849854269554754, language=CN, title=基于高分子溶液注入的管道减阻特性实验研究, columnId=1301954871012385172, journalTitle=实验流体力学, columnName=第十四届全国实验流体力学学术论文专题, runingTitle=null, highlight=null, articleAbstract=
在湍流管道中加入微量高分子聚合物添加剂即可显著降低管壁摩擦阻力。目前,高分子溶液湍流减阻已广泛应用于管道输运、生物医药以及农田灌溉等领域。聚乙烯氧化物(PEO)是一种高效的湍流减阻添加剂,其减阻效果受多种因素影响。为此,基于重力驱动式循环管道系统,实验研究了湍流管道中PEO溶液喷射的减阻特性及其影响因素。系统分析了雷诺数、喷射角度(共7种)、喷射速率、相对分子质量(共7种)等因素对减阻率(RD)的影响,并定义了适用于管流的归一化高分子溶液通量Kp,揭示了其与减阻率的标度律关系。研究发现:RD随lg Kp先呈线性增长、后趋于饱和,与平板边界层注入的K–标度律相似;相对分子质量对减阻的影响曲线呈S型,最佳相对分子质量范围可通过SGompertz函数拟合预测。研究结果可为管道喷射减阻中高分子注射参数的优化和预测提供指导。
, authors=时朋飞
1, 胡海豹
1, 文俊
1, 孙海浪
1, 2, 谢络
1, 3, 4, *, authorsList=时朋飞, 胡海豹, 文俊, 孙海浪, 谢络, authorCompany=null, correspAuthors=谢络, authorNote=
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时朋飞(1998—),男,河北石家庄人,博士研究生。研究方向:水下新型减阻降噪技术。E-mail:shipf98@163.com
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时朋飞(1998—),男,河北石家庄人,博士研究生。研究方向:水下新型减阻降噪技术。E-mail:shipf98@163.com
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1西北工业大学 航海学院,西安 710072)])]), Author(id=1301954875986829760, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954870710395281, orderNo=2, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1301954876058132930, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954870710395281, authorId=1301954875986829760, language=EN, stringName=Jun WEN, firstName=Jun, middleName=null, lastName=WEN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1西北工业大学 航海学院,西安 710072, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1301954874699178408, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954870710395281, xref=1, ext=[AuthorCompanyExt(id=1301954874707567017, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954870710395281, companyId=1301954874699178408, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1西北工业大学 航海学院,西安 710072)])]), Author(id=1301954876192350661, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954870710395281, orderNo=3, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1301954876288819656, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954870710395281, authorId=1301954876192350661, language=EN, stringName=Hailang SUN, firstName=Hailang, middleName=null, lastName=SUN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=
1School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China
2China Ship Scientific Research Center, Wuxi 214082, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1301954876360122825, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954870710395281, authorId=1301954876192350661, language=CN, stringName=孙海浪, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=
1西北工业大学 航海学院,西安 710072
2中国船舶科学研究中心,江苏无锡 214082, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1301954874699178408, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954870710395281, xref=1, ext=[AuthorCompanyExt(id=1301954874707567017, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954870710395281, companyId=1301954874699178408, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1, 3, 4, *, address=
1School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China
3Xi'an Tianhe Defense Technology Co., Ltd, Xi’an 710019, China
4Xi’an Tianhe Maritime Technologies Co., Ltd, Xi’an 710019, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1301954876624363984, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954870710395281, authorId=1301954876439814603, language=CN, stringName=谢络, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 3, 4, *, address=
1西北工业大学 航海学院,西安 710072
3西安天和防务技术股份有限公司,西安 710019
4西安天和海防智能科技有限公司,西安 710019, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1301954874699178408, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954870710395281, xref=1, ext=[AuthorCompanyExt(id=1301954874707567017, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954870710395281, companyId=1301954874699178408, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1西北工业大学 航海学院,西安 710072)]), AuthorCompany(id=1301954875043111342, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954870710395281, xref=3, ext=[AuthorCompanyExt(id=1301954875055694255, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954870710395281, companyId=1301954875043111342, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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