Rayleigh-Marangoni-Bénard  Convective Instability

IMECH-IR > 力学所知识产出(1956-2008)

	Rayleigh-Marangoni-Bénard Convective Instability
	Liu QS(刘秋生); Zhou BH(周炳红); Hu L(胡良); Kang Q(康琦); Hu WR(胡文瑞); Liu QS(刘秋生)
Source Publication	2th International Symposium on Physical Sciences in Space /Spacebound
	2004-05-23
Conference Name	2th International Symposium on Physical Sciences in Space /Spacebound, Toronto, May 23-27, 2004
Conference Date	May 23-27, 2004
Conference Place	Toronto
Abstract	The Rayleigh-Marangoni-Benard convective instability (R-M-B instability) and flow patterns in the two-layer system of silicon oil 10cSt and Fluorinert FC70 liquids are studied theoretically and experimentally. Both linear instability analysis and 2D numerical simulation (A=L/H=10) were performed to study the influence of thermocapillary force on the convective instability of the two-layer system. Time-dependent oscillations arising at the onset of convection were investigated in a larger various range of two-layer depth ratios (Hr=H1/H2) from 0.2 to 5.0 for different total depth less than 12mm. Our results are different from the previous study on the Rayleig-B閚ard instability and show the strong effects of thermocapillary force at the interface on the time-dependent oscillations at the onset of instability convection. Primary experimental results of the critical instability parameters and the convective structure in the R-M-B convection have been obtained by using the digital particle image velocimetry (DPIV) system, and a good agreement in comparison with the results of numerical simulation was obtained.
Language	英语
Document Type	会议论文
Identifier	http://dspace.imech.ac.cn/handle/311007/13794
Collection	力学所知识产出(1956-2008)
Corresponding Author	Liu QS(刘秋生)
Recommended Citation GB/T 7714	Liu QS,Zhou BH,Hu L,et al. Rayleigh-Marangoni-Bénard Convective Instability[C]2th International Symposium on Physical Sciences in Space /Spacebound,2004.

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