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Space experimental study on wave modes under instability of thermocapillary convection in liquid bridges on Tiangong-2
Kang Q(康琦)1,2; Wu D(吴笛)1; Duan L(段俐)1,2; Zhang JQ3; Zhou B(周彬)1; Wang J(王佳)1; Han ZY(韩志一)1; Hu L(胡良)1; Hu WR(胡文瑞)1,2
Corresponding AuthorKang, Qi(kq@imech.ac.cn) ; Duan, Li(duanli@imech.ac.cn)
Source PublicationPHYSICS OF FLUIDS
2020-03-01
Volume32Issue:3Pages:16
ISSN1070-6631
AbstractWe carried out space experiments on thermocapillary convection in liquid bridges with large Prandtl number in the Tiangong-2 space laboratory, studying the influence of geometrical parameters, including aspect ratio (Ar, height to diameter) and volume ratio (Vr). It is found that there are two modes of temperature oscillation in thermocapillary convection in liquid bridges: low- and high-frequency oscillation, corresponding to different critical temperature difference and geometrical parameters, respectively. In this paper, the geometrical effect on the wave pattern and its transformation in the oscillating thermocapillary flow is studied in detail. Temperature signals from thermocouples on five measuring spots are analyzed to distinguish different oscillation modes corresponding to characteristics of azimuthal waves, such as wave number, traveling wave, and standing wave. Under a small volume ratio, the low-frequency traveling wave mode transits to the high-frequency standing wave mode; under a large volume ratio, the high-frequency standing wave has abundant mode transformations, such as standing wave -> traveling wave, standing wave -> traveling wave -> standing wave, and so on, and the transformation process of the wave mode is sensitive to the aspect ratio. Published under license by AIP Publishing.
DOI10.1063/1.5143219
Indexed BySCI ; EI
Language英语
WOS IDWOS:000521072000001
WOS KeywordFLOATING-ZONE ; TRANSITION ; VOLUME ; ONSET ; FLOW ; OSCILLATION ; COLUMNS ; STEADY ; RATIO
WOS Research AreaMechanics ; Physics
WOS SubjectMechanics ; Physics, Fluids & Plasmas
Funding Projectspace experiment project on Tiangong-2 (TG-2) of manned space program of China
Funding Organizationspace experiment project on Tiangong-2 (TG-2) of manned space program of China
Classification一类/力学重要期刊
Ranking1
ContributorKang, Qi ; Duan, Li
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/81838
Collection国家微重力实验室
Affiliation1.Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing 100190, Peoples R China;
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China;
3.Chinese Acad Sci, Technol & Engn Ctr Space Utilizat, Beijing 100094, Peoples R China
Recommended Citation
GB/T 7714
Kang Q,Wu D,Duan L,et al. Space experimental study on wave modes under instability of thermocapillary convection in liquid bridges on Tiangong-2[J]. PHYSICS OF FLUIDS,2020,32(3):16.
APA 康琦.,吴笛.,段俐.,Zhang JQ.,周彬.,...&胡文瑞.(2020).Space experimental study on wave modes under instability of thermocapillary convection in liquid bridges on Tiangong-2.PHYSICS OF FLUIDS,32(3),16.
MLA 康琦,et al."Space experimental study on wave modes under instability of thermocapillary convection in liquid bridges on Tiangong-2".PHYSICS OF FLUIDS 32.3(2020):16.
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