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Influence of bond number on behaviors of liquid drops deposited onto solid substrates
Zhu ZQ(朱志强); Wang Y(汪洋); Liu QS(刘秋生); Jie JC(解京昌); Liu, QS; Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Natl Micrograv Lab, Beijing 100190, Peoples R China.
Source PublicationMICROGRAVITY SCIENCE AND TECHNOLOGY
2012-06-01
Volume24Issue:3Pages:181-188
ISSN0938-0108
AbstractThe problem of spreading behaviors of pendant and sessile drops was studied experimentally and numerically under the action of gravity force and surface tension. Bond number was considered to be a main factor of the influence on shape behaviors of liquid drops. This study was performed in the framework of an experimental investigation of drop behaviors in microgravity onboard a Chinese satellite in future. The experiments were carried out in the Drop Tower of Beijing, which could supply about 3.6 s of microgravity (free-fall) time. The surface shape change of liquid drops was investigated and the contact angle variety in sessile and pendant drops were measured from normal gravity to microgravity. A sharp decrease and oscillatory variation of the contact angle for both sessile and pendant drops were found with the sudden decrease of Bond number. The succedent comparison between experimental and numerical results suggests that Bond number has a significant influence on the drop contact angle. Additionally, the drop shapes and the bulk flows inside sessile and pendant drops were analyzed numerically, and it was found that the bulk flows could affect the free-surface shape of liquid drops apparently. Comparison of the moving velocity of contact line between sessile and pendant drops indicated that the pendant drops had a faster response to Bond number.
KeywordDrop Spreading Bond Number Contact Angle Microgravity Bulk Flow Contact-angle Evaporation Rates Sessile Drop Surfaces Water Capillarity Dynamics Gravity Systems Flow
Subject Area微重力流体力学
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000306127100005
Funding OrganizationThis research was financially supported by the National Natural Science Foundation of China (Grant Nos. 11072249 and 50890182) and the Knowledge Innovation Project of Chinese Academy of Sciences (CXJJ-10-M55), the Knowledge Innovation Project of Institute of Mechanics/CAS.
DepartmentNML流动稳定性与复杂流动
Classification二类/Q2
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/46691
Collection国家微重力实验室
Corresponding AuthorLiu, QS; Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Natl Micrograv Lab, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Zhu ZQ,Wang Y,Liu QS,et al. Influence of bond number on behaviors of liquid drops deposited onto solid substrates[J]. MICROGRAVITY SCIENCE AND TECHNOLOGY,2012,24(3):181-188.
APA Zhu ZQ,Wang Y,Liu QS,Jie JC,Liu, QS,&Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Natl Micrograv Lab, Beijing 100190, Peoples R China..(2012).Influence of bond number on behaviors of liquid drops deposited onto solid substrates.MICROGRAVITY SCIENCE AND TECHNOLOGY,24(3),181-188.
MLA Zhu ZQ,et al."Influence of bond number on behaviors of liquid drops deposited onto solid substrates".MICROGRAVITY SCIENCE AND TECHNOLOGY 24.3(2012):181-188.
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