Oscillatory flow at the onset of convection in two-layer Bénard-Marangoni system

	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)
	2009
会议名称	60th International Astronautical Congress 2009, IAC 2009
会议日期	October 12, 2009 - October 16, 2009
会议地点	Daejeon, Korea, Republic of
关键词	Critical 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
通讯作者	Kang, Q. (kq@imech.ac.cn)
中文摘要	In 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.
收录类别	EI
会议录	60th International Astronautical Congress 2009, IAC 2009
语种	英语
ISBN号	9781615679089
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/60459]
专题	力学研究所_国家微重力实验室
推荐引用方式 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]. 见:60th International Astronautical Congress 2009, IAC 2009. Daejeon, Korea, Republic of. October 12, 2009 - October 16, 2009.