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Surface configurations and wave patterns of thermocapillary convection onboard the SJ10 satellite
Kang Q(康琦)1,2; Wu D(吴笛)1; Duan L(段俐)1,2; He JW(贺建武)1; Hu L(胡良)1; Duan LS(段隆盛)1,2; Hu WR(胡文瑞)1,2
Source PublicationPHYSICS OF FLUIDS
2019-04-01
Volume31Issue:4Pages:20
ISSN1070-6631
Abstract

A fluid experiment was conducted on China's SJ10 satellite to assess the instability of thermocapillary convection under microgravity. Oscillations of thermocapillary convection in an annular pool were investigated when the difference in temperature exceeded a certain threshold. Dynamics and transitions of the wave pattern were observed using an infrared camera. This work is concerned with the effect of the surface configuration on the wave patterns. There are 3 types of surface configurations that depend on the volume ratio: Vr < 0.77 (zone 1), 0.77 < Vr < 1 (zone 2), and Vr > 1 (zone 3). An irregular local wave occurs at Vr < 0.65, and a regular azimuthal wave occurs at Vr > 0.65. We observed the regular wave with the wavenumber m = 3 in zone 1 and zone 3 and the competition between m = 3 and m = 4 in zone 2. The nonlinear dynamics of traveling waves, standing waves, and counterpropagating waves were studied. The standing wave appears near the onset and transitions to the traveling wave. With a similar mechanism, counterpropagating waves with m = 3 and m = 4 occur in some cases at the onset. Additionally, counterpropagating waves also act as a transitional mode when the traveling wave transitions from m = 4 to m = 3. The traveling wave is very stable, but it develops into standing waves or Benjamin-Feir instability under highly supercritical conditions. Published under license by AIP Publishing.

DOI10.1063/1.5090466
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000466701800044
WOS KeywordOPEN CYLINDRICAL ANNULI ; TENSION-DRIVEN FLOW ; CRUCIBLE ROTATION ; LIQUID BRIDGE ; INSTABILITIES ; NUMBER ; MICROGRAVITY ; CRYSTAL ; ONSET ; SIMULATION
WOS Research AreaMechanics ; Physics
WOS SubjectMechanics ; Physics, Fluids & Plasmas
Funding ProjectNational Natural Science Foundation of China[XDA04020405] ; National Natural Science Foundation of China[XDA04020202-05] ; [U1738116]
Funding OrganizationNational Natural Science Foundation of China
Classification一类/力学重要期刊
Ranking1
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/79192
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
Recommended Citation
GB/T 7714
Kang Q,Wu D,Duan L,et al. Surface configurations and wave patterns of thermocapillary convection onboard the SJ10 satellite[J]. PHYSICS OF FLUIDS,2019,31(4):20.
APA Kang Q.,Wu D.,Duan L.,He JW.,Hu L.,...&Hu WR.(2019).Surface configurations and wave patterns of thermocapillary convection onboard the SJ10 satellite.PHYSICS OF FLUIDS,31(4),20.
MLA Kang Q,et al."Surface configurations and wave patterns of thermocapillary convection onboard the SJ10 satellite".PHYSICS OF FLUIDS 31.4(2019):20.
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