G-jitter effects on half floating-zone convection in intermediate-frequency range

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	G-jitter effects on half floating-zone convection in intermediate-frequency range
	Tang H; Lu F; Hu WR(胡文瑞); TANG, H (reprint author), CHINESE ACAD SCI,INST MECH,15 ZHONG GUAN CUN RD,BEIJING 100080,PEOPLES R CHINA.
发表期刊	Microgravity Science and Technology
	1995
卷号	8 期号:1 页码:10-15
ISSN	0938-0108
摘要	The g-jitter influence on thermocapillary convection and critical Marangoni number in a liquid bridge of half-floating rone was discussed in the low frequency range of 0.4 to 1.5 Hz in a previous paper. This paper extended the experiments to the intermediate frequency range of 2 to 18 Hz, which htrs often been recorded as vibration environment of spacecrafts. The experiment was completed on the deck of a vibration machine, which gave a periodical applied acceleration to simulate the effects of g-jitter. The experimental results in the intermediate frequency range are different from that in the low frequency range. The velocity field and the shape of the free surface have periodical fluctuations in response to g-jitter. The amplitude of the periodical varying part of the temperature response decreases obviously with increasing frequency of g-jitter and vanishes almost when the frequency of g-jitter is high enough. The critical Marangoni number is defined to describe the transition from a periodical convection in response to g-jitter to an oscillatory convection due to internal instability, and will increase with increasing g-jitter frequency. According to the spectral analysis, it can be found that the oscillatory part of temperature is a superposition of two harmonic waves if the Marangoni number is larger than a critical value.
关键词	Thermocapillary Liquid Layers Instabilities
收录类别	SCI
语种	英语
WOS记录号	WOS:A1995QW53300002
关键词[WOS]	THERMOCAPILLARY LIQUID LAYERS ; INSTABILITIES
WOS研究方向	Engineering ; Thermodynamics ; Mechanics
WOS类目	Engineering, Aerospace ; Thermodynamics ; Mechanics
引用统计	被引频次：6[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/311007/39258
专题	力学所知识产出(1956-2008)
通讯作者	TANG, H (reprint author), CHINESE ACAD SCI,INST MECH,15 ZHONG GUAN CUN RD,BEIJING 100080,PEOPLES R CHINA.
推荐引用方式 GB/T 7714	Tang H,Lu F,Hu WR,et al. G-jitter effects on half floating-zone convection in intermediate-frequency range[J]. Microgravity Science and Technology,1995,8,1,:10-15.
APA	Tang H,Lu F,胡文瑞,&TANG, H .(1995).G-jitter effects on half floating-zone convection in intermediate-frequency range.Microgravity Science and Technology,8(1),10-15.
MLA	Tang H,et al."G-jitter effects on half floating-zone convection in intermediate-frequency range".Microgravity Science and Technology 8.1(1995):10-15.

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