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环形液池热毛细对流的线性稳定性研究

陈启生 何蒙 胡开鑫

陈启生, 何蒙, 胡开鑫. 环形液池热毛细对流的线性稳定性研究[J]. 空间科学学报, 2016, 36(4): 476-480. doi: 10.11728/cjss2016.04.476
引用本文: 陈启生, 何蒙, 胡开鑫. 环形液池热毛细对流的线性稳定性研究[J]. 空间科学学报, 2016, 36(4): 476-480. doi: 10.11728/cjss2016.04.476
CHEN Qisheng, HE Meng, HU Kaixin. Linear Stability Analysis of Thermocapillary Convection in Annular Pools[J]. Chinese Journal of Space Science, 2016, 36(4): 476-480. doi: 10.11728/cjss2016.04.476
Citation: CHEN Qisheng, HE Meng, HU Kaixin. Linear Stability Analysis of Thermocapillary Convection in Annular Pools[J]. Chinese Journal of Space Science, 2016, 36(4): 476-480. doi: 10.11728/cjss2016.04.476

环形液池热毛细对流的线性稳定性研究

doi: 10.11728/cjss2016.04.476
基金项目: 国家自然科学基金项目资助(11272320,11532015)
详细信息
    作者简介:

    陈启生,qschen@imech.ac.cn

  • 中图分类号: V524

Linear Stability Analysis of Thermocapillary Convection in Annular Pools

  • 摘要: 对外壁加热的环形液池热毛细对流进行了线性稳定性分析.采用Chebyshev配点法对Pr=6.8、内外径之比为0.5、深宽比A范围为0.25~1.4的数值结果进行分析,发现流动的临界状态均为振荡形式,并且随着A的增大,临界雷诺数减小,相应的临界波数与振荡频率也呈减小趋势.能量分析结果表明,小扰动与基本流相互作用项较小,表面张力在径向做功与周向做功对小扰动的动能变化起主导作用.观察三者与液池深宽比的关系,发现A=0.8时表面张力在径向做功项达到极小值,周向做功项以及小扰动与基本流相互作用项达到极大值.

     

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出版历程
  • 收稿日期:  2015-11-10
  • 修回日期:  2016-05-09
  • 刊出日期:  2016-07-15

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