Article(id=1320176388766806885, tenantId=1146029695717560320, journalId=1301849854269554754, issueId=1320176147946648091, articleNumber=null, orderNo=null, doi=10.11729/syltlx20260001, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1767456000000, receivedDateStr=2026-01-04, revisedDate=1771516800000, revisedDateStr=2026-02-20, acceptedDate=1773849600000, acceptedDateStr=2026-03-19, onlineDate=1792684178773, onlineDateStr=2026-10-22, pubDate=1787587200000, pubDateStr=2026-08-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792684178773, onlineIssueDateStr=2026-10-22, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792684178773, creator=13701087609, updateTime=1792684178773, updator=13701087609, issue=Issue{id=1320176147946648091, tenantId=1146029695717560320, journalId=1301849854269554754, year='2026', volume='40', issue='4', pageStart='1', pageEnd='137', issueExtLink='null', onlineDate='null', pubDate='1787587200000', pubDateStr='2026-08-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1792684121357, creator='13701087609', updateTime=1792720571222, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1320329029853495708, tenantId=1146029695717560320, journalId=1301849854269554754, issueId=1320176147946648091, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1320329029853495709, tenantId=1146029695717560320, journalId=1301849854269554754, issueId=1320176147946648091, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=130, endPage=137, ext={EN=ArticleExt(id=1320176389106545511, articleId=1320176388766806885, tenantId=1146029695717560320, journalId=1301849854269554754, language=EN, title=Experimental study of droplet impact on superhydrophobic single-slot surfaces, columnId=1320176148672262684, journalTitle=Journal of Experiments in Fluid Mechanics, columnName=Special Issue on Microscale and Nanoscale Flows, runingTitle=null, highlight=null, articleAbstract=
Existing studies of droplet impact dynamics on superhydrophobic surfaces have predominantly focused on conventional substrates lacking macroscopic geometric features, while comparatively limited attention has been given to non-conventional surfaces with macro-structures that are common in practical engineering. In this study, we experimentally investigate the impact dynamics of droplets on superhydrophobic surfaces featuring a single macroscopic slot. We systematically examine the effects of the dimensionless slot width (the ratio of the actual slot width to the initial droplet diameter, 0.09–0.54) and the Weber number (4.03–36.59) on droplet spreading, retraction, penetration, and fragmentation. Four characteristic regimes are observed—complete rebound, rebound with partial penetration, fragmentation with partial penetration, and full penetration—and their corresponding parameter maps are constructed. The maximum spreading diameter decreases progressively as the slot width increases. By accounting for both the slot width and liquid penetration height, a modified theoretical model is developed to predict the maximum spreading coefficient as a function of the Weber number, achieving great agreement with experimental measurements. Moreover, partial liquid penetration during impact reduces the effective mass involved in spreading and retraction, leading to a significant reduction in the droplet–surface contact time.
, authors=Ying Zhou
1, Jack Hau Yung Lo
1, Pingan Zhu
1, 2, *, authorsList=Ying Zhou, Jack Hau Yung Lo, Pingan Zhu, authorCompany=null, correspAuthors=Pingan Zhu, 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=1320176407167218635, articleId=1320176388766806885, tenantId=1146029695717560320, journalId=1301849854269554754, language=CN, title=液滴撞击超疏水单狭缝表面的实验研究, columnId=1320176148844229150, journalTitle=实验流体力学, columnName=微纳尺度流动专刊, runingTitle=null, highlight=null, articleAbstract=
液滴撞击超疏水表面的动力学研究多集中于无宏观几何特征的常规表面,对实际工程中广泛存在的、具有宏观结构的非常规表面关注不足。本文通过实验探究了液滴撞击超疏水单狭缝表面的动力学行为,系统考察了无量纲狭缝宽度(狭缝实际宽度与液滴初始直径之比,0.09~0.54)和韦伯数(4.03~36.59)对液滴铺展、回缩、穿透及破碎过程的影响。本文通过实验观察到完整回弹、回弹并部分穿透、破碎并部分穿透及完全穿透4种典型行为,并绘制了其对应的参数相图。液滴的最大铺展直径随狭缝宽度增加而逐渐减小。通过考虑狭缝宽度和液体穿透高度,本文建立了修正后的最大铺展系数与韦伯数的理论预测模型,理论值与实验值具有良好的一致性。此外,由于部分液体在撞击过程中穿透狭缝,导致参与铺展与回缩的有效质量减少,使得液滴与表面的接触时间显著缩短。
, authors=周莹
1, 卢孝勇
1, 朱平安
1, 2, *, authorsList=周莹, 卢孝勇, 朱平安, authorCompany=null, correspAuthors=朱平安, authorNote=
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周莹(1996—),女,山东济宁人,博士。研究方向:开放条件下的液滴碰撞。E-mail:yzhou462-c@my.cityu.edu.hkyzhou462-c@my.cityu.edu.hk
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周莹(1996—),女,山东济宁人,博士。研究方向:开放条件下的液滴碰撞。E-mail:yzhou462-c@my.cityu.edu.hkyzhou462-c@my.cityu.edu.hk
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Nature, 2002, 417(6891): 811. doi: 10.1038/417811a, articleTitle=null, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1320177156471239153, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, xref=1, ext=[AuthorCompanyExt(id=1320177156479627762, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, companyId=1320177156471239153, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1Department of Mechanical Engineering, City University of Hong Kong, Hong Kong 999077, China), AuthorCompanyExt(id=1320177156488016371, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, companyId=1320177156471239153, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1香港城市大学 机械工程系,香港 999077)]), AuthorCompany(id=1320177158148960756, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, xref=2, ext=[AuthorCompanyExt(id=1320177158157349365, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, companyId=1320177158148960756, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2City University of Hong Kong Shenzhen Research Institute, Shenzhen 518000, China), AuthorCompanyExt(id=1320177158161543670, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, companyId=1320177158148960756, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2香港城市大学深圳研究院,深圳 518000)])], figs=[ArticleFig(id=1320177159851848209, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=EN, label=Fig.1, caption=
Morphology and wetting property of the superhydrophobic glass slot substrate, figureFileSmall=xD69Wubj0jhJVLHW1Awufw==, figureFileBig=qAEXojusJg+2jHhq0O2wQw==, tableContent=null), ArticleFig(id=1320177159918957074, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=CN, label=图1, caption=
超疏水单狭缝基底的形貌与润湿性表征, figureFileSmall=xD69Wubj0jhJVLHW1Awufw==, figureFileBig=qAEXojusJg+2jHhq0O2wQw==, tableContent=null), ArticleFig(id=1320177160007037459, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=EN, label=Fig.2, caption=
Schematic of the experimental setup, figureFileSmall=n/OtEpgK9DzBHwf89yFBsw==, figureFileBig=dUwj5ETTucRhiGpB1LQIJQ==, tableContent=null), ArticleFig(id=1320177160074146324, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=CN, label=图2, caption=
实验装置图, figureFileSmall=n/OtEpgK9DzBHwf89yFBsw==, figureFileBig=dUwj5ETTucRhiGpB1LQIJQ==, tableContent=null), ArticleFig(id=1320177160158032405, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=EN, label=Fig.3, caption=
Side-view dynamics of complete droplet rebound on a superhydrophobic single-slot surface, figureFileSmall=uOvOEseNc9GQT/Sj520krg==, figureFileBig=Pwb+LcpWv0BlH6jdapxJGg==, tableContent=null), ArticleFig(id=1320177160237724182, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=CN, label=图3, caption=
液滴在超疏水单狭缝表面发生完整回弹的动态过程(侧视), figureFileSmall=uOvOEseNc9GQT/Sj520krg==, figureFileBig=Pwb+LcpWv0BlH6jdapxJGg==, tableContent=null), ArticleFig(id=1320177160304833047, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=EN, label=Fig.4, caption=
Top-view dynamics of complete droplet rebound on a superhydrophobic single-slot surface, figureFileSmall=QRzxmkjWiTh3i7X8zVCLVA==, figureFileBig=tWMWeDfOSZ0ZVSmUURc/3g==, tableContent=null), ArticleFig(id=1320177160380330520, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=CN, label=图4, caption=
液滴在超疏水单狭缝表面发生完整回弹的动态过程(俯视), figureFileSmall=QRzxmkjWiTh3i7X8zVCLVA==, figureFileBig=tWMWeDfOSZ0ZVSmUURc/3g==, tableContent=null), ArticleFig(id=1320177160447439385, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=EN, label=Fig.5, caption=
Dynamic process of droplets rebounding while partially passing through the slot, figureFileSmall=p01+IOeuWTez9ia9wVAxNg==, figureFileBig=Z2fQmjxNMN28U4FAnEPW8Q==, tableContent=null), ArticleFig(id=1320177160506159642, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=CN, label=图5, caption=
液滴撞击超疏水单狭缝表面回弹并部分穿透狭缝的动态过程, figureFileSmall=p01+IOeuWTez9ia9wVAxNg==, figureFileBig=Z2fQmjxNMN28U4FAnEPW8Q==, tableContent=null), ArticleFig(id=1320177160573268507, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=EN, label=Fig.6, caption=
Dynamic process of droplet breakup while partially passing through the slot, figureFileSmall=41B/R2Sc/ypv8CZoJdYYog==, figureFileBig=hHSuoU4i+u+NUBcvLsn9XA==, tableContent=null), ArticleFig(id=1320177160640377372, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=CN, label=图6, caption=
液滴撞击超疏水单狭缝表面后破碎并部分穿透狭缝的动态行为, figureFileSmall=41B/R2Sc/ypv8CZoJdYYog==, figureFileBig=hHSuoU4i+u+NUBcvLsn9XA==, tableContent=null), ArticleFig(id=1320177160711680541, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=EN, label=Fig.7, caption=
Dynamic process of droplets totally passing through the slot, figureFileSmall=FRMcPLI4PK5M8jSIOiJbHA==, figureFileBig=ybQJ3MdZyidTZr2q1fyHbg==, tableContent=null), ArticleFig(id=1320177160770400798, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=CN, label=图7, caption=
液滴撞击超疏水单狭缝表面后完全穿透狭缝的动态行为, figureFileSmall=FRMcPLI4PK5M8jSIOiJbHA==, figureFileBig=ybQJ3MdZyidTZr2q1fyHbg==, tableContent=null), ArticleFig(id=1320177160833315359, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=EN, label=Fig.8, caption=
Phase diagram of droplet impact on superhydrophobic slot surface, figureFileSmall=ljZjGNN/Wfsic+TAv5Kddg==, figureFileBig=YvFqJIh6zjP5uL7vfRx00w==, tableContent=null), ArticleFig(id=1320177160896229920, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=CN, label=图8, caption=
液滴撞击超疏水狭缝表面的动力学行为相图, figureFileSmall=ljZjGNN/Wfsic+TAv5Kddg==, figureFileBig=YvFqJIh6zjP5uL7vfRx00w==, tableContent=null), ArticleFig(id=1320177160959144481, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=EN, label=Fig.9, caption=
Liquid mass of droplets passing through the slot surface under different impact conditions, figureFileSmall=dBv+s2Gaon/5nR75s9S7Gw==, figureFileBig=pmex2knpK2mrSta9wzzSWQ==, tableContent=null), ArticleFig(id=1320177162599117346, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=CN, label=图9, caption=
不同撞击条件下液滴穿透狭缝表面的液体质量, figureFileSmall=dBv+s2Gaon/5nR75s9S7Gw==, figureFileBig=pmex2knpK2mrSta9wzzSWQ==, tableContent=null), ArticleFig(id=1320177162674614819, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=EN, label=Fig.10, caption=
Relationship between the maximum spreading factor and Weber number for droplets on slots of varying widths (Inset is the illustration of a droplet at its maximum spreading diameter), figureFileSmall=27JLYui9ns1LHb1bE7DWIg==, figureFileBig=fAY/JwNiTQ4q7qJivoZ/gQ==, tableContent=null), ArticleFig(id=1320177162741723684, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=CN, label=图10, caption=
不同狭缝宽度下液滴最大铺展系数随We的变化关系图(插图为液滴达到最大铺展直径的示意图), figureFileSmall=27JLYui9ns1LHb1bE7DWIg==, figureFileBig=fAY/JwNiTQ4q7qJivoZ/gQ==, tableContent=null), ArticleFig(id=1320177162808832549, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=EN, label=Fig.11, caption=
Comparison between the experimental and theoretical values of the maximum spreading coefficient, figureFileSmall=x0LDBfsLB9EVhRX7Crosrg==, figureFileBig=HBm0yYGVcOUBILSAq4OAqw==, tableContent=null), ArticleFig(id=1320177162880135718, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=CN, label=图11, caption=
液滴最大铺展系数实验测量值与理论值对比, figureFileSmall=x0LDBfsLB9EVhRX7Crosrg==, figureFileBig=HBm0yYGVcOUBILSAq4OAqw==, tableContent=null), ArticleFig(id=1320177162938855975, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=EN, label=Fig.12, caption=
Variation of droplet contact time with the Weber number at different slot widths, figureFileSmall=/sFezrPHPJEqxHLnWWVwXw==, figureFileBig=+guGua3qouKj0I1RH92SsQ==, tableContent=null), ArticleFig(id=1320177163001770536, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=CN, label=图12, caption=
不同狭缝宽度下液滴接触时间随We的变化, figureFileSmall=/sFezrPHPJEqxHLnWWVwXw==, figureFileBig=+guGua3qouKj0I1RH92SsQ==, tableContent=null), ArticleFig(id=1320177163060490793, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=EN, label=Fig.13, caption=
Normalized contact time varying with the Weber number, figureFileSmall=D3BLO0s+tCu68SHU5lwWHA==, figureFileBig=ghyWB26yus8Kr2SdVc5M7w==, tableContent=null), ArticleFig(id=1320177163123405354, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=CN, label=图13, caption=
归一化接触时间随We的变化, figureFileSmall=D3BLO0s+tCu68SHU5lwWHA==, figureFileBig=ghyWB26yus8Kr2SdVc5M7w==, tableContent=null), ArticleFig(id=1320177163190514219, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=EN, label=Table 1, caption=
Experimental conditions
, figureFileSmall=null, figureFileBig=null, tableContent=
| D0/mm | 下落高度/mm | 液体碰撞速度v0/(m·s−1) | 韦伯数We |
|---|
| 2.8 | 5 | 0.32 | 4.03 |
| 10 | 0.40 | 7.99 |
| 15 | 0.56 | 12.18 |
| 20 | 0.65 | 16.39 |
| 25 | 0.72 | 20.34 |
| 30 | 0.7 | 23.59 |
| 35 | 0.84 | 27.51 |
| 40 | 0.87 | 29.62 |
| 45 | 0.96 | 35.45 |
| 50 | 0.97 | 36.59 |
), ArticleFig(id=1320177163257623084, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176388766806885, language=CN, label=表1, caption=
实验条件参数表
, figureFileSmall=null, figureFileBig=null, tableContent=
| D0/mm | 下落高度/mm | 液体碰撞速度v0/(m·s−1) | 韦伯数We |
|---|
| 2.8 | 5 | 0.32 | 4.03 |
| 10 | 0.40 | 7.99 |
| 15 | 0.56 | 12.18 |
| 20 | 0.65 | 16.39 |
| 25 | 0.72 | 20.34 |
| 30 | 0.7 | 23.59 |
| 35 | 0.84 | 27.51 |
| 40 | 0.87 | 29.62 |
| 45 | 0.96 | 35.45 |
| 50 | 0.97 | 36.59 |
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Width of the slot
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| W/mm | $W^* $ |
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| 0.25 | 0.09 |
| 0.50 | 0.18 |
| 0.88 | 0.31 |
| 1.25 | 0.45 |
| 1.50 | 0.54 |
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狭缝宽度表
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| W/mm | $W^* $ |
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| W* | A | B |
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| 0.09 | −0.58 | 0.87 |
| 0.25 | −0.43 | 0.90 |
| 0.31 | −0.27 | 0.89 |
| 0.45 | −0.19 | 0.86 |
| 0.54 | −0.17 | 0.83 |
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不同无量纲宽度$W^* $
下拟合项A与B的值
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| 0.31 | −0.27 | 0.89 |
| 0.45 | −0.19 | 0.86 |
| 0.54 | −0.17 | 0.83 |
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