Article(id=1320176897301000831, tenantId=1146029695717560320, journalId=1301849854269554754, issueId=1320176652034880125, articleNumber=null, orderNo=null, doi=10.11729/syltlx20230165, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1703520000000, receivedDateStr=2023-12-26, revisedDate=1710777600000, revisedDateStr=2024-03-19, acceptedDate=1711036800000, acceptedDateStr=2024-03-22, onlineDate=1792684300017, onlineDateStr=2026-10-22, pubDate=1777046400000, pubDateStr=2026-04-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792684300017, onlineIssueDateStr=2026-10-22, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792684300017, creator=13701087609, updateTime=1792684300017, updator=13701087609, issue=Issue{id=1320176652034880125, tenantId=1146029695717560320, journalId=1301849854269554754, year='2026', volume='40', issue='2', pageStart='1', pageEnd='124', issueExtLink='null', onlineDate='null', pubDate='1777046400000', pubDateStr='2026-04-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1792684241540, creator='13701087609', updateTime=1792684241540, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=110, endPage=124, ext={EN=ArticleExt(id=1320176897519104640, articleId=1320176897301000831, tenantId=1146029695717560320, journalId=1301849854269554754, language=EN, title=Experimental study on stall characteristics of wing sections with leading-edge protuberances inspired by humpback whale flipper, columnId=1301954885767946779, journalTitle=Journal of Experiments in Fluid Mechanics, columnName=Fundamental Research and Application, runingTitle=null, highlight=null, articleAbstract=
In recent years, relevant studies have shown that wing sections with humpback whale-like leading-edge protuberances can effectively delay stall and improve aerodynamic performance after stall. To investigate the flow separation phenomenon of the biomimetic leading-edge protuberances wing section, a particle image velocimetry (PIV) experimental study on the NACA 634-021 wing section and modified wing sections with single and double leading-edge protuberances is carried out. The distributions of statistics such as the average velocity of the wing section suction surface and the turbulent kinetic energy at different angles of attack are compared. The proper orthogonal decomposition (POD) method is adopted to analyze the experimental data. The flow structures during the stall process are analyzed from an energy perspective. The study finds that: both single and double leading-edge protuberances wing sections have two-step stall characteristics. When a unilateral stall occurs, there is a stable attached flow at the convex peak, which suppresses the extension of the stall zone to the other side of the convex peak and plays a role similar to a wing blade. Compared to the single leading-edge protuberance wing section, the wing section with double leading-edge protuberances undergoes stall mode transition at smaller angles of attack. The energy of each mode of POD decomposition is related to the stall mode at which the wing section is located. The characteristics of the flow structure in the flow field change with the switching of stall modes. The flow separation mode of the single leading-edge protuberance wing section exhibits instability during the transition from unilateral stall to bilateral stall. This study provides an experimental reference for the theoretical research and potential engineering application of biomimetic leading-edge protuberances wing sections.
, authors=Dewei SHI
1, Letian CHEN
1, Ziye FAN
1, Nan JIANG
1, 2, Zhigang ZUO
3, *, Zhanqi TANG
1, 2, *, authorsList=Dewei SHI, Letian CHEN, Ziye FAN, Nan JIANG, Zhigang ZUO, Zhanqi TANG, authorCompany=null, correspAuthors=Zhigang ZUO, Zhanqi TANG, 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=1320176910928294607, articleId=1320176897301000831, tenantId=1146029695717560320, journalId=1301849854269554754, language=CN, title=仿座头鲸鳍肢前缘单/双凸起翼段失速特性的实验研究, columnId=1301954885923136029, journalTitle=实验流体力学, columnName=基础研究与应用, runingTitle=null, highlight=null, articleAbstract=
近年来,相关研究表明仿座头鲸鳍肢前缘凸起可以有效延缓翼段失速或改善失速后翼段的气动性能。为研究仿生前缘凸起翼型的流动分离现象,针对二维平直翼段NACA 634-021以及带有单个和两个前缘凸起的改型翼段开展了粒子图像测速(PIV)实验研究。对比了不同迎角下各翼段吸力面的平均速度、湍动能等统计量的分布,并对实验数据进行了本征正交分解(POD)模态分析,从能量的角度对失速过程中的流动结构进行了研究。研究发现:单、双凸起翼段都具有两步失速特性,当发生单侧失速时,凸峰处存在稳定的附着流动,抑制了失速区向凸起另一侧的扩展,起到了类似翼刀的作用;相比于单凸起翼段,双凸起翼段在更小的迎角下发生失速模式的转换;POD分解的各阶模态能量大小与翼段所处的失速模式有关,失速模式的切换会导致流场中流动结构特征发生变化;单凸起翼段处于单侧失速与双侧失速转换的临界迎角时,流动分离模式具有不稳定性。本研究为仿生前缘凸起翼型的理论研究和工程应用提供了实验参考。
, authors=时德伟
1, 陈乐天
1, 范子椰
1, 姜楠
1, 2, 左志钢
3, *, 唐湛棋
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, copyrightStatement=版权所有©《实验流体力学》编辑部 2026, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=y5R+Sb8jYrSlecEHT6V8Vg==, magXml=9lixVVjpfwPifBTI8T2sLQ==, pdfUrl=null, pdf=zA3oIwh0rGSasFPAoIKw6g==, pdfFileSize=35456844, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=tVeH7DwilyUpLo3M6004LQ==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=EDpW9GHUnnX7HU58fE3dWw==, mapNumber=null, fund=null)}, authors=[Author(id=1320176913029640922, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=13512993936@163.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1320176913105138396, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, authorId=1320176913029640922, language=EN, stringName=Dewei SHI, firstName=Dewei, middleName=null, lastName=SHI, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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时德伟(1996—),男,辽宁鞍山人,硕士研究生。研究方向:流动分离与控制。E-mail:13512993936@163.com13512993936@163.com
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时德伟(1996—),男,辽宁鞍山人,硕士研究生。研究方向:流动分离与控制。E-mail:13512993936@163.com13512993936@163.com
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1Department of Mechanics, School of Mechanical Engineering, Tianjin University, Tianjin 300354, China
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1天津大学 机械工程学院 力学系,天津 300354
2天津市现代工程力学重点实验室,天津 300354, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1320176911330947792, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, xref=1, ext=[AuthorCompanyExt(id=1320176911339336401, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, companyId=1320176911330947792, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1天津大学 机械工程学院 力学系,天津 300354
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Experimental setup diagram, figureFileSmall=Y23V5cJHeqs8GQpxMq89Ng==, figureFileBig=a5YSenI4+ncqHTXXjn67Fg==, tableContent=null), ArticleFig(id=1320176917534323462, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=CN, label=图2, caption=
实验装置图, figureFileSmall=Y23V5cJHeqs8GQpxMq89Ng==, figureFileBig=a5YSenI4+ncqHTXXjn67Fg==, tableContent=null), ArticleFig(id=1320176917609820935, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=EN, label=Fig.3, caption=
Time-averaged flow velocity cloud diagram of the flat wing section, figureFileSmall=f5jlonYWEwh0Mr8LKw2oMw==, figureFileBig=YeNOoRRox0cUec1PHAf22Q==, tableContent=null), ArticleFig(id=1320176917672735496, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=CN, label=图3, caption=
平直翼段时均流向速度云图, figureFileSmall=f5jlonYWEwh0Mr8LKw2oMw==, figureFileBig=YeNOoRRox0cUec1PHAf22Q==, tableContent=null), ArticleFig(id=1320176917739844361, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=EN, label=Fig.4, caption=
Mean flow velocity contour surface for the single leading-edge protuberance wing section, figureFileSmall=n40rwCppBNScBuwSxmEtBQ==, figureFileBig=Gjcry1X7O9qeC4dcDOFwfQ==, tableContent=null), ArticleFig(id=1320176917802758922, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=CN, label=图4, caption=
单凸起翼段时均流向速度等值面, figureFileSmall=n40rwCppBNScBuwSxmEtBQ==, figureFileBig=Gjcry1X7O9qeC4dcDOFwfQ==, tableContent=null), ArticleFig(id=1320176917865673483, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=EN, label=Fig.5, caption=
Mean flow velocity contour distribution of the right root section, figureFileSmall=9mbaTRyhAFxgB4V/rf/vmQ==, figureFileBig=QbVs7LP4CfXXRY2JqUDSaQ==, tableContent=null), ArticleFig(id=1320176917936976652, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=CN, label=图5, caption=
右侧根部截面的时均流向速度分布, figureFileSmall=9mbaTRyhAFxgB4V/rf/vmQ==, figureFileBig=QbVs7LP4CfXXRY2JqUDSaQ==, tableContent=null), ArticleFig(id=1320176918004085517, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=EN, label=Fig.6, caption=
Mean flow velocity contour distribution of the left three sections, figureFileSmall=y5E1iMFwnxhJnBO0ZpYKDQ==, figureFileBig=9VwEkTr57GKW8odfd3v6fw==, tableContent=null), ArticleFig(id=1320176918071194382, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=CN, label=图6, caption=
凸峰及左侧截面的时均流向速度分布, figureFileSmall=y5E1iMFwnxhJnBO0ZpYKDQ==, figureFileBig=9VwEkTr57GKW8odfd3v6fw==, tableContent=null), ArticleFig(id=1320176918138303247, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=EN, label=Fig.7, caption=
Mean flow velocity contour surface for the double leading-edge protuberances wing section, figureFileSmall=gSQqpivLJEbqJN0E8gbzug==, figureFileBig=8y1677Cf8W1k0eujVI4uVg==, tableContent=null), ArticleFig(id=1320176918201217808, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=CN, label=图7, caption=
双凸起翼段时均流向速度等值面, figureFileSmall=gSQqpivLJEbqJN0E8gbzug==, figureFileBig=8y1677Cf8W1k0eujVI4uVg==, tableContent=null), ArticleFig(id=1320176918264132369, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=EN, label=Fig.8, caption=
The POD modes' energy proportion of the flat wing section, figureFileSmall=HM8R8/kwKaQ8bownuVBWkw==, figureFileBig=foYVBROzcEYCK2R3gKrZ0g==, tableContent=null), ArticleFig(id=1320176918322852626, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=CN, label=图8, caption=
平直翼段POD模态能量占比, figureFileSmall=HM8R8/kwKaQ8bownuVBWkw==, figureFileBig=foYVBROzcEYCK2R3gKrZ0g==, tableContent=null), ArticleFig(id=1320176918389961491, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=EN, label=Fig.9, caption=
First two POD modes of the flat wing section, figureFileSmall=pA7sR/mdieURQkXFP+dHMw==, figureFileBig=3R77PlB7nyrv7orQUaS7uQ==, tableContent=null), ArticleFig(id=1320176918452876052, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=CN, label=图9, caption=
平直翼段POD分解前2阶模态, figureFileSmall=pA7sR/mdieURQkXFP+dHMw==, figureFileBig=3R77PlB7nyrv7orQUaS7uQ==, tableContent=null), ArticleFig(id=1320176918524179221, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=EN, label=Fig.10, caption=
The POD modes' energy proportion of the single leading-edge protuberance wing section, figureFileSmall=iv3a46m0TgLhli/xngd86Q==, figureFileBig=Eax0Dq+hGE8TpvfHVPB/WQ==, tableContent=null), ArticleFig(id=1320176918591288086, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=CN, label=图10, caption=
单凸起翼段POD模态能量占比, figureFileSmall=iv3a46m0TgLhli/xngd86Q==, figureFileBig=Eax0Dq+hGE8TpvfHVPB/WQ==, tableContent=null), ArticleFig(id=1320176918662591255, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=EN, label=Fig.11, caption=
First two POD modes of the single leading-edge protu-berance wing section, figureFileSmall=oSD4NbAxxRIx9ZN7ekaG5A==, figureFileBig=ZTSrIex3J+sU7LAaHY47rg==, tableContent=null), ArticleFig(id=1320176918725505816, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=CN, label=图11, caption=
单凸起翼段POD分解前2阶模态, figureFileSmall=oSD4NbAxxRIx9ZN7ekaG5A==, figureFileBig=ZTSrIex3J+sU7LAaHY47rg==, tableContent=null), ArticleFig(id=1320176918796808985, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=EN, label=Fig.12, caption=
Flow field comparison of the single leading-edge protu-berance wing section, α = 24°, figureFileSmall=FpBbjJGqgr9D4Er8eS4sKw==, figureFileBig=+MHI+JwDXlZDZcn6XWhdZA==, tableContent=null), ArticleFig(id=1320176918863917850, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=CN, label=图12, caption=
单凸起翼段流场对比,α = 24°, figureFileSmall=FpBbjJGqgr9D4Er8eS4sKw==, figureFileBig=+MHI+JwDXlZDZcn6XWhdZA==, tableContent=null), ArticleFig(id=1320176918935221019, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=EN, label=Fig.13, caption=
Flow field comparison of the single leading-edge protuberance wing section, α = 22°, figureFileSmall=U/5Xmw037K/IvI8mOsp9OQ==, figureFileBig=vk+jcbIurU+FtRgtmUzx7Q==, tableContent=null), ArticleFig(id=1320176919010718492, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=CN, label=图13, caption=
单凸起翼段流场对比,α = 22°, figureFileSmall=U/5Xmw037K/IvI8mOsp9OQ==, figureFileBig=vk+jcbIurU+FtRgtmUzx7Q==, tableContent=null), ArticleFig(id=1320176919098798877, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=EN, label=Fig.14, caption=
The POD modes' energy proportion of the double leading-edge protuberances wing section, figureFileSmall=JDkdTf485gvp9g4KpuyptA==, figureFileBig=Ww81rtn9LDLZ1po40qD2bw==, tableContent=null), ArticleFig(id=1320176919170102046, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=CN, label=图14, caption=
双凸起翼段POD模态能量占比, figureFileSmall=JDkdTf485gvp9g4KpuyptA==, figureFileBig=Ww81rtn9LDLZ1po40qD2bw==, tableContent=null), ArticleFig(id=1320176919241405215, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=EN, label=Fig.15, caption=
First two POD modes of double leading-edge protuberances wing section, figureFileSmall=OzkNnhVD6r3UOhP/zz/9dA==, figureFileBig=HGCKOlXwdsyKUlbZleMKjA==, tableContent=null), ArticleFig(id=1320176919304319776, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=CN, label=图15, caption=
双凸起翼段POD分解前2阶模态, figureFileSmall=OzkNnhVD6r3UOhP/zz/9dA==, figureFileBig=HGCKOlXwdsyKUlbZleMKjA==, tableContent=null), ArticleFig(id=1320176919363040033, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=EN, label=Fig.16, caption=
Flow field comparison of double leading-edge protuberances wing section, figureFileSmall=qLMtT3YETB48812Q0V6pZA==, figureFileBig=+n24XFUbwxGyy15HE9S0pQ==, tableContent=null), ArticleFig(id=1320176919430148898, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176897301000831, language=CN, label=图16, caption=
双凸起翼段流场对比, figureFileSmall=qLMtT3YETB48812Q0V6pZA==, figureFileBig=+n24XFUbwxGyy15HE9S0pQ==, tableContent=null)], attaches=null, journal=Journal(id=1301845723249213501, delFlag=0, nameCn=实验流体力学, nameEn=Journal of Experiments in Fluid Mechanics, nameHistory1=null, nameHistory2=null, issn=1672-9897, eissn=null, cn=11-5266/V, coden=null, periodic=1, language=CN, oaType=null, ccby=null, superviseOffice=null, ownerOffice=null, pubOffice=null, editorOffice=null, officeType=null, aims=null, clcCode=null, officeProv=null, officeCity=null, officeAddr=null, officeZip=null, officeEmail=null, officePhone=null, editDirector=null, officeDirector=null, officeDirectorPhone=null, officeStaffNum=null, officeEmpNum=null, coverPicUrl=IysuUGLKdKcj9RHlN5gAEg==, journalPrice=null, startedYear=null, abbrevIsoEn=Journal of Experiments in Fluid Mechanics, journalRemark=null, publicationField=null, createdTime=1788313807548, updatedTime=1788949682314, createdBy=18614031015, updatedBy=13041195026, 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