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Oscillatory flow at the onset of convection in two-layer Bénard-Marangoni system
Kang Q(康琦); Li LJ(李陆军); Duan L(段俐); Hu WR(胡文瑞); Kang, Q. (kq@imech.ac.cn)
Source Publication60th International Astronautical Congress 2009, IAC 2009
2009
Conference Name60th International Astronautical Congress 2009, IAC 2009
Conference DateOctober 12, 2009 - October 16, 2009
Conference PlaceDaejeon, Korea, Republic of
AbstractIn this paper, the time-dependent Be´nard-Marangoni convections of two-layer fluid at the onset of convection are investigated experimentally. The flows are visualized from side with particle image velocimetry (PIV) and structure change of velocity fields near onset of convection are observed while the depth ratio varies in a range. The variation of the critical temperature difference with the depth ratio shows that the "peak depth ratio" is very far from the "balancing depth ratio"; the oscillatory onsets from stationary were obtained in a big gap of depth ratio in which the "peak depth ratio" located. These results don't agree with the predications of the linear stability analysis.
KeywordCritical Temperature Difference Depth Ratio Marangoni Marangoni Convection Onset Of Convection Oscillatory Flows Particle Image Velocimetries Structure Change Time-dependent Two Layer Fluid Two Layers Velocity Field
ISBN9781615679089
Indexed ByEI
Language英语
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60459
Collection国家微重力实验室
Corresponding AuthorKang, Q. (kq@imech.ac.cn)
Recommended Citation
GB/T 7714
Kang Q,Li LJ,Duan L,et al. Oscillatory flow at the onset of convection in two-layer Bénard-Marangoni system[C],2009.
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