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热毛细效应对细丝薄膜流动不稳定性的影响
Effect of Thermocapillary on the Absolute and Convective Stabilities of a Thin Flim Flowing down a Fibre
查看参考文献12篇
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文摘
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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. |
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其他语种文摘
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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. |
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来源
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空间科学学报
,2016,36(4):497-500 【核心库】
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DOI
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10.11728/cjss2016.04.497
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关键词
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热毛细效应
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薄膜
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绝对/对流不稳定性
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地址
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中国科学院力学研究所, 中国科学院微重力重点实验室, 北京, 100190
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0254-6124 |
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学科
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航天(宇宙航行) |
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基金
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国家自然科学基金项目
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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
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中国科学院战略性先导科技专项
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文献收藏号
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CSCD:5752242
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参考文献 共
12
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