The volume ratio effect on flow patterns and transition processes of thermocapillary convection | |
Kang Q(康琦)1,2; Wang J(王佳)1; Duan L(段俐)1,2; Su YY(苏引引)1; He JW(贺建武)1; Wu D(吴笛)1; Hu WR(胡文瑞)1,2 | |
发表期刊 | JOURNAL OF FLUID MECHANICS |
2019-06-10 | |
卷号 | 868页码:560-583 |
ISSN | 0022-1120 |
摘要 | Thermocapillary convection has always been one of the most important research topics in microgravity fluid physics. A space experimental study on the thermocapillary convection in an open annular liquid pool - a typical thermocapillary flow system - has been conducted on the SJ-10 satellite of China. This space experiment has observed the spatial temperature distribution of the liquid free surface using an infrared thermal imager, obtained the flow pattern transition process, analysed the oscillation characteristics and revealed the instability mechanism of themocapillary convection. The shape effects on the flow instability are researched by changing the volume ratio, Vr, which denotes the ratio of the liquid volume to the volume of the cylindrical gap between the walls. The volume ratio effect has been focused on for the first time. For a certain volume ratio, the flow pattern would transform from the steady state to the oscillation state accompanied by directional propagating hydrothermal waves with increasing temperature difference. In addition, the significant influences of the volume ratio on the critical conditions and wavenumber selection have been analysed in detail. |
关键词 | Marangoni convection pattern formation parametric instability |
DOI | 10.1017/jfm.2019.108 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000465317500001 |
关键词[WOS] | BUOYANT-THERMOCAPILLARY ; LIQUID LAYERS ; INSTABILITIES ; MICROGRAVITY ; OSCILLATION ; SILICON |
WOS研究方向 | Mechanics ; Physics |
WOS类目 | Mechanics ; Physics, Fluids & Plasmas |
资助项目 | Strategic Priority Research Program on Space Science of Chinese Academy of Sciences[XDA04020405] ; Strategic Priority Research Program on Space Science of Chinese Academy of Sciences[XDA04020202-05] ; National Natural Science Foundation of China[U1738116] |
项目资助者 | Strategic Priority Research Program on Space Science of Chinese Academy of Sciences ; National Natural Science Foundation of China |
论文分区 | 一类/力学重要期刊 |
力学所作者排名 | 1 |
RpAuthor | Duan, Li |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/78756 |
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 |
推荐引用方式 GB/T 7714 | Kang Q,Wang J,Duan L,et al. The volume ratio effect on flow patterns and transition processes of thermocapillary convection[J]. JOURNAL OF FLUID MECHANICS,2019,868:560-583. |
APA | Kang Q.,Wang J.,Duan L.,Su YY.,He JW.,...&Hu WR.(2019).The volume ratio effect on flow patterns and transition processes of thermocapillary convection.JOURNAL OF FLUID MECHANICS,868,560-583. |
MLA | Kang Q,et al."The volume ratio effect on flow patterns and transition processes of thermocapillary convection".JOURNAL OF FLUID MECHANICS 868(2019):560-583. |
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