Article(id=1301954924397490854, tenantId=1146029695717560320, journalId=1301849854269554754, issueId=1301954868281889048, articleNumber=null, orderNo=null, doi=10.11729/syltlx20250086, pmid=null, cstr=32472.14.syltlx20250086, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1758729600000, receivedDateStr=2025-09-25, revisedDate=1765814400000, revisedDateStr=2025-12-16, acceptedDate=1765900800000, acceptedDateStr=2025-12-17, onlineDate=1788339843129, onlineDateStr=2026-09-02, pubDate=1782316800000, pubDateStr=2026-06-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1788339843129, onlineIssueDateStr=2026-09-02, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1788339843129, creator=13701087609, updateTime=1788339843129, 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=18, endPage=28, ext={EN=ArticleExt(id=1301954924649149095, articleId=1301954924397490854, tenantId=1146029695717560320, journalId=1301849854269554754, language=EN, title=Conditional phase-lock averaged mode of burst in turbulent boundary layer over superhydrophobic surface, 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=
Multi-scale wavelet analysis along the longitudinal direction was conducted on the large-sample-size time series of instantaneous velocity fields of the turbulent boundary layer over a smooth hydrophilic surface, an isotropic and an anisotropic superhydrophobic surface respectively measured by Time-Resolved Particle Image Velocimetry(TR–PIV), and the distribution of turbulent fluctuating kinetic energy with different longitudinal spatial scales and different normal coordinates was obtained. It was found that the isotropic and anisotropic superhydrophobic surface significantly suppressed the kinetic energy of turbulent fluctuation at all scales. The two types of burst events of the coherent structure were detected respectively by using the positive maxima and negative minima of the wavelet coefficients at each scale. The conditional phase-locked averaged modes of the streamwise fluctuating velocity, normal-wall fluctuating velocity and spanwise fluctuating vorticity of the two burst events were obtained by the conditional phase-locking averaging method at the same scale. It was found that the phase averaged modes of the streamwise and wall-normal fluctuating velocities of the two bursts conformed to the shear layer characteristics of the eject-sweep and swept-eject modes. The phase-locked averaged mode of the fluctuating vorticity corresponded to the structural feature of a quadrupole vortex packet with alternating positive and negative distributions in the streamwise and wall-normal directions, and its streamlines were manifested as a dynamic system of saddle point-focus. Isotropic and anisotropic superhydrophobic surfaces can significantly suppress the burst intensity of coherent structures at various scales.
, authors=Zechu CHEN
1, Nan JIANG
1, 2, 3, *, authorsList=Zechu CHEN, Nan JIANG, authorCompany=null, correspAuthors=Nan JIANG, 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=1301954929023808193, articleId=1301954924397490854, tenantId=1146029695717560320, journalId=1301849854269554754, language=CN, title=超疏水壁面湍流边界层猝发条件相位平均模态, 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=
针对基于TR–PIV系统获得的光滑亲水壁面、各向同性超疏水壁面和各向异性超疏水壁面湍流边界层瞬时速度场的大样本时间序列,进行沿流向空间的多尺度小波分析,得到不同流向空间尺度下湍流脉动动能随法向坐标和尺度的分布,发现各向同性和各向异性超疏水壁面显著抑制了各尺度的湍流脉动动能。利用各尺度小波系数的正极大值和负极小值分别检测相干结构的2种猝发事件,采用同尺度空间锁相条件平均的方法,得到2种猝发的流向脉动速度、法向脉动速度和展向脉动涡量的条件相位平均模态。结果表明:2种猝发事件中流向脉动速度、法向脉动速度的条件相位平均模态符合喷射–扫掠和扫掠–喷射的剪切层特征;脉动涡量的相位平均模态呈现流向、法向正负交替分布的四极子涡包结构特征,其流线表现为鞍点–焦点的动力系统;同时,各向同性和各向异性超疏水壁面显著抑制了各尺度相干结构的猝发强度。
, authors=陈泽楚
1, 姜楠
1, 2, 3, *, authorsList=陈泽楚, 姜楠, authorCompany=null, correspAuthors=姜楠, authorNote=
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Schematic of the experimental setup, figureFileSmall=bwwjKePMosY0SAzquXXfwQ==, figureFileBig=r99FGmHiaxKwpqEcJRKZXg==, tableContent=null), ArticleFig(id=1301954933016785632, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954924397490854, language=CN, label=图1, caption=
实验装置示意图, figureFileSmall=bwwjKePMosY0SAzquXXfwQ==, figureFileBig=r99FGmHiaxKwpqEcJRKZXg==, tableContent=null), ArticleFig(id=1301954933260055265, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954924397490854, language=EN, label=Fig.2, caption=
Isotropic superhydrophobic surface and Anisotropic superhydrophobic surface, figureFileSmall=FHGrA0v2GIXiFmJr4kF5sA==, figureFileBig=vL5tDl9Qe2vJIInJlPH/NA==, tableContent=null), ArticleFig(id=1301954933322969826, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954924397490854, language=CN, label=图2, caption=
各向同性超疏水表面与各向异性超疏水表面, figureFileSmall=FHGrA0v2GIXiFmJr4kF5sA==, figureFileBig=vL5tDl9Qe2vJIInJlPH/NA==, tableContent=null), ArticleFig(id=1301954933402661603, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954924397490854, language=EN, label=Fig.3, caption=
Average velocity profile, figureFileSmall=BXHbxEVC0jCsTbIg5UZgEQ==, figureFileBig=Ude/zJp55fTar96PovP8bA==, tableContent=null), ArticleFig(id=1301954933566239460, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954924397490854, language=CN, label=图3, caption=
平均速度剖面, figureFileSmall=BXHbxEVC0jCsTbIg5UZgEQ==, figureFileBig=Ude/zJp55fTar96PovP8bA==, tableContent=null), ArticleFig(id=1301954933641736933, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954924397490854, language=EN, label=Fig.4, caption=
Reynolds stress profile, figureFileSmall=XxqsUERN7XfeUBwloQUizw==, figureFileBig=DFq7q+w9febWZBrL0YYDkA==, tableContent=null), ArticleFig(id=1301954933713040102, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954924397490854, language=CN, label=图4, caption=
雷诺应力剖面, figureFileSmall=XxqsUERN7XfeUBwloQUizw==, figureFileBig=DFq7q+w9febWZBrL0YYDkA==, tableContent=null), ArticleFig(id=1301954933784343271, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954924397490854, language=EN, label=Fig.5, caption=
Turbulent pulsation kinetic energy distribution with respect to normal coordinates and scale under different wall conditions, figureFileSmall=Sq/rZPv6BqGMH8auLpq5TQ==, figureFileBig=d0XsQHLucH+DhJmP0DMoXw==, tableContent=null), ArticleFig(id=1301954933897589480, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954924397490854, language=CN, label=图5, caption=
不同壁面条件下湍流脉动动能随法向坐标和尺度的变化, figureFileSmall=Sq/rZPv6BqGMH8auLpq5TQ==, figureFileBig=d0XsQHLucH+DhJmP0DMoXw==, tableContent=null), ArticleFig(id=1301954933973086953, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954924397490854, language=EN, label=Fig.6, caption=
Conditional sampling method based on wavelet coefficients, figureFileSmall=dgcXsIwknLPqBP0ikQoNyA==, figureFileBig=zmVwDZiAJW8GWJgZ9B0eWA==, tableContent=null), ArticleFig(id=1301954934052778730, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954924397490854, language=CN, label=图6, caption=
根据小波系数设立的条件采样方法, figureFileSmall=dgcXsIwknLPqBP0ikQoNyA==, figureFileBig=zmVwDZiAJW8GWJgZ9B0eWA==, tableContent=null), ArticleFig(id=1301954934115693291, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954924397490854, language=EN, label=Fig.7, caption=
Flow pulsation velocity under different wall conditions, figureFileSmall=bBbWohpyDq1Rxuowyo7OGQ==, figureFileBig=rHA4WvBy6w9Vc51y2MW4yQ==, tableContent=null), ArticleFig(id=1301954934174413548, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954924397490854, language=CN, label=图7, caption=
不同壁面条件下的流向脉动速度, figureFileSmall=bBbWohpyDq1Rxuowyo7OGQ==, figureFileBig=rHA4WvBy6w9Vc51y2MW4yQ==, tableContent=null), ArticleFig(id=1301954934237328109, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954924397490854, language=EN, label=Fig.8, caption=
Pulsating vortex flow under different wall conditions, figureFileSmall=IHKi8NU5uFLljCUZ0LqXjQ==, figureFileBig=0bXfY/3C4Cnm0LujPchHzg==, tableContent=null), ArticleFig(id=1301954934342185710, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954924397490854, language=CN, label=图8, caption=
不同壁面条件下的脉动涡量, figureFileSmall=IHKi8NU5uFLljCUZ0LqXjQ==, figureFileBig=0bXfY/3C4Cnm0LujPchHzg==, tableContent=null), ArticleFig(id=1301954934413488879, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954924397490854, language=EN, label=Fig.9, caption=
Flow pulsation velocity at different normal heights, figureFileSmall=IbPVLuKBY/j4HB/WMMBWHw==, figureFileBig=Mrmtri924Nun3IixFvZIuA==, tableContent=null), ArticleFig(id=1301954934488986352, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954924397490854, language=CN, label=图9, caption=
不同法向高度的流向脉动速度, figureFileSmall=IbPVLuKBY/j4HB/WMMBWHw==, figureFileBig=Mrmtri924Nun3IixFvZIuA==, tableContent=null), ArticleFig(id=1301954934551900913, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954924397490854, language=EN, label=Fig.10, caption=
Pulsating vorticity at different normal heights, figureFileSmall=a04YB/6ZL8T9VrkAu7E/oQ==, figureFileBig=dJ0aWMzbnrSLeJ6xsVjDpA==, tableContent=null), ArticleFig(id=1301954934639981298, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954924397490854, language=CN, label=图10, caption=
不同法向高度的脉动涡量, figureFileSmall=a04YB/6ZL8T9VrkAu7E/oQ==, figureFileBig=dJ0aWMzbnrSLeJ6xsVjDpA==, tableContent=null), ArticleFig(id=1301954934711284467, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954924397490854, language=EN, label=Fig.11, caption=
Conditional average flow field at the fourth and seventh scales, figureFileSmall=8I7g/2w+MzJIAC9EVgXE6Q==, figureFileBig=pNebGqP00fCH9zjdlluVmA==, tableContent=null), ArticleFig(id=1301954934770004724, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954924397490854, language=CN, label=图11, caption=
第4和第7尺度的条件平均流场, figureFileSmall=8I7g/2w+MzJIAC9EVgXE6Q==, figureFileBig=pNebGqP00fCH9zjdlluVmA==, tableContent=null), ArticleFig(id=1301954934841307893, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954924397490854, language=EN, label=Tab.1, caption=
Main parameters of the turbulent boundary layer
, figureFileSmall=null, figureFileBig=null, tableContent=
| SM | SH | RISH |
| $ {U}_{\infty } $/(m·s−1) | 0.267 | 0.267 | 0.264 |
| $ \delta $/mm | 48.9 | 48.5 | 49.6 |
| $ \theta $/mm | 6.01 | 6.14 | 6.21 |
| $ {Re}_{\theta } $ | 1990 | 2036 | 2034 |
| $ {Re}_{\tau } $ | 703 | 696 | 682 |
| $ {u}_{\tau } $/(m·s−1) | 0.01164 | 0.01162 | 0.01113 |
), ArticleFig(id=1301954934916805366, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1301954924397490854, language=CN, label=表1, caption=
湍流边界层主要参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| SM | SH | RISH |
| $ {U}_{\infty } $/(m·s−1) | 0.267 | 0.267 | 0.264 |
| $ \delta $/mm | 48.9 | 48.5 | 49.6 |
| $ \theta $/mm | 6.01 | 6.14 | 6.21 |
| $ {Re}_{\theta } $ | 1990 | 2036 | 2034 |
| $ {Re}_{\tau } $ | 703 | 696 | 682 |
| $ {u}_{\tau } $/(m·s−1) | 0.01164 | 0.01162 | 0.01113 |
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