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Thermodynamic Behaviors of Macroscopic Liquid Droplets Evaporation from Heated Substrates
Chen X; Zhu ZQ(朱志强); Liu QS(刘秋生); Wang XW; Liu, QS (reprint author), Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Key Lab Micrograv, Beijing 100190, Peoples R China.
Source PublicationMICROGRAVITY SCIENCE AND TECHNOLOGY
2015-09
Volume27Issue:5Pages:353-360
ISSN0938-0108
AbstractEvaporation of a macroscopic-scale sessile droplet on different hot isothermal substrates has been experimentally investigated, for the framework of planning space experiments onboard Chinese recoverable satellite to explore the interface effect, heat and mass transfer during the phase transition process. Undoubtedly, the evaporation phenomenon of a sessile drop on heated substrates is a complex problem which involves the behavior of triple line, heat transfer with thermal conduction and convection, mass transfer into the vapor phase. Therefore, preparations from scientific view have been carried out to validate setup of the space experiment modes. Based on the experiments performed in the terrestrial gravity, we found that the evolution of a water droplet could be separated into three stages, began with the constant contact area, then switched to the depin stage and ended up with the flushing stage. The average evaporation rate was measured and the thermal effects of different substrates were studied. Results revealed a linear variation of contact diameter with its average evaporation rate, which has the similar tendency with small drops. The varieties of the heat flux density during evaporating showed that droplet absorbed energy from the heated substrate, then with the help of the internal flow of thermocaplliry and buoyant convection, heat was transported to the liquid-vapor interface providing the energy for evaporation.
KeywordSessile Drop Evaporation Thermocaplliry Convection Buoyant Convection Heat And Mass Transfer
DOI10.1007/s12217-015-9426-0
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000366103200006
WOS KeywordSESSILE DROPLET ; CONTACT LINE
WOS Research AreaEngineering ; Thermodynamics ; Mechanics
WOS SubjectEngineering, Aerospace ; Thermodynamics ; Mechanics
Funding OrganizationThis research was financially supported by the National Natural Science Foundation of China (Grants No. 11302236) and the Strategic Priority Research Program on Space Science, Chinese Academy of Sciences (Grants No.XDA 04073000, XDA 04020202-02), and China Manned Space Program (TZ-1).
DepartmentNML流动稳定性与复杂流动
Classification二类/Q2
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/58365
Collection国家微重力实验室
Corresponding AuthorLiu, QS (reprint author), Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Key Lab Micrograv, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Chen X,Zhu ZQ,Liu QS,et al. Thermodynamic Behaviors of Macroscopic Liquid Droplets Evaporation from Heated Substrates[J]. MICROGRAVITY SCIENCE AND TECHNOLOGY,2015,27(5):353-360.
APA Chen X,朱志强,刘秋生,Wang XW,&Liu, QS .(2015).Thermodynamic Behaviors of Macroscopic Liquid Droplets Evaporation from Heated Substrates.MICROGRAVITY SCIENCE AND TECHNOLOGY,27(5),353-360.
MLA Chen X,et al."Thermodynamic Behaviors of Macroscopic Liquid Droplets Evaporation from Heated Substrates".MICROGRAVITY SCIENCE AND TECHNOLOGY 27.5(2015):353-360.
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