| 热毛细效应对细丝薄膜流动不稳定性的影响 |
| |
| 引用本文： | 刘荣,刘秋生.热毛细效应对细丝薄膜流动不稳定性的影响[J].空间科学学报,2016,36(4):497-500. |
| |
| 作者姓名： | 刘荣 刘秋生 |
| |
| 作者单位： | 中国科学院力学研究所 微重力重点实验室 北京 100190 |
| |
| 基金项目： | 国家自然科学基金项目(11532015);载人航天工程空间应用系统天舟一号货运飞船科学实验项目;中国科学院空间科学战略性先导科技专项项目(XDA04020202-02)共同资助 |
| |
| 摘 要： | 根据重力与热毛细力耦合作用薄膜在细丝上的流动情况，采用长波近似推导了界面的演化方程.通过色散关系分析热毛细作用对Rayleigh-Plateau稳定性的影响；通过时空模式的稳定性分析，研究了系统的绝对对流不稳定性特性；通过直接数值模拟，研究了薄膜破裂和绝对对流稳定性的关系.
|
| 关 键 词： | 热毛细效应 薄膜 绝对/对流不稳定性 |
| 收稿时间： | 2015-11-10 |
| 修稿时间： | 2016-04-04 |
Effect of Thermocapillary on the Absolute and Convective Stabilities of a Thin Flim Flowing down a Fibre |
| |
| LIU Rong;LIU Qiusheng.Effect of Thermocapillary on the Absolute and Convective Stabilities of a Thin Flim Flowing down a Fibre[J].Chinese Journal of Space Science,2016,36(4):497-500. |
| |
| Authors: | LIU Rong;LIU Qiusheng |
| |
| Institution: | Key Laboratory of Microgravity, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190 |
| |
| Abstract: | The dynamics of a viscous film flowing down a vertical fibre under the action of gravity and the thermocapillary is analyzed theoretically. This exterior coating flow is driven by a Rayleigh-Plateau mechanism modified by the presence of gravity as well as the variation of surface tension induced by temperature gradient along the interface. A temporal-spacial stability analysis is performed to investigate the influence of the thermocapillarity on the convective/absolute instability (CI/AI) of axisymmetric disturbances. The results show that the thermocapillary plays an important role in determining the CI/AI characteristics in different flow regimes. |
| |
| Keywords: | Effect of thermocapillary Fibre flow Convective absolute stability |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《空间科学学报》浏览原始摘要信息 |
| 点击此处可从《空间科学学报》下载免费的PDF全文 |
