Space experimental study on wave modes under instability of thermocapillary convection in liquid bridges on Tiangong-2

doi:10.1063/1.5143219

IMECH-IR > 微重力重点实验室

	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 JQ 3; 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
通讯作者	Kang, Qi(kq@imech.ac.cn) ; Duan, Li(duanli@imech.ac.cn)
发表期刊	PHYSICS OF FLUIDS
	2020-03-01
卷号	32 期号:3 页码:16
ISSN	1070-6631
摘要	We 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.
DOI	10.1063/1.5143219
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000521072000001
关键词[WOS]	FLOATING-ZONE ; TRANSITION ; VOLUME ; ONSET ; FLOW ; OSCILLATION ; COLUMNS ; STEADY ; RATIO
WOS研究方向	Mechanics ; Physics
WOS类目	Mechanics ; Physics, Fluids & Plasmas
资助项目	space experiment project on Tiangong-2 (TG-2) of manned space program of China
项目资助者	space experiment project on Tiangong-2 (TG-2) of manned space program of China
论文分区	一类/力学重要期刊
力学所作者排名	1
RpAuthor	Kang, Qi ; Duan, Li
引用统计	被引频次：20[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/81838
专题	微重力重点实验室
作者单位	1.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
推荐引用方式 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.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Jp2020111.pdf（7852KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览下载