G-jitter effects on half floating-zone convection in intermediate-frequency range
文献类型：期刊论文
| 作者 | Tang H; Lu F; Hu WR(胡文瑞)
|
| 刊名 | Microgravity Science and Technology
 |
| 出版日期 | 1995 |
| 卷号 | 8期号:1页码:10-15 |
| 关键词 | Thermocapillary Liquid Layers Instabilities |
| ISSN号 | 0938-0108 |
| 通讯作者 | TANG, H (reprint author), CHINESE ACAD SCI,INST MECH,15 ZHONG GUAN CUN RD,BEIJING 100080,PEOPLES R CHINA. |
| 中文摘要 | 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. |
| 类目[WOS] | Engineering, Aerospace ; Thermodynamics ; Mechanics |
| 研究领域[WOS] | Engineering ; Thermodynamics ; Mechanics |
| 关键词[WOS] | THERMOCAPILLARY LIQUID LAYERS ; INSTABILITIES |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:A1995QW53300002 |
| 公开日期 | 2009-08-03 ; 2010-08-20 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/39258]  |
| 专题 | 力学研究所_力学所知识产出(1956-2008) |
| 推荐引用方式 GB/T 7714 | Tang H,Lu F,Hu WR. 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.(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. |
入库方式： OAI收割
来源：力学研究所
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