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大普朗特数大液桥浮力-热毛细对流地面实验

吴勇强 段俐 李永强 康琦

吴勇强, 段俐, 李永强, 康琦. 大普朗特数大液桥浮力-热毛细对流地面实验[J]. 力学学报, 2012, 44(6): 981-989. doi: 10.6052/0459-1879-12-148
引用本文: 吴勇强, 段俐, 李永强, 康琦. 大普朗特数大液桥浮力-热毛细对流地面实验[J]. 力学学报, 2012, 44(6): 981-989. doi: 10.6052/0459-1879-12-148
Wu Yongqiang, Duan Li, Li Yongqiang, Kang Qi. GROUND EXPERIMENTS OF BOUYANT THERMOCAPILLARY CONVECTION OF LARGE SCALE LIQUID BRIDGE WITH LARGE PRANDTL NUMBER[J]. Chinese Journal of Theoretical and Applied Mechanics, 2012, 44(6): 981-989. doi: 10.6052/0459-1879-12-148
Citation: Wu Yongqiang, Duan Li, Li Yongqiang, Kang Qi. GROUND EXPERIMENTS OF BOUYANT THERMOCAPILLARY CONVECTION OF LARGE SCALE LIQUID BRIDGE WITH LARGE PRANDTL NUMBER[J]. Chinese Journal of Theoretical and Applied Mechanics, 2012, 44(6): 981-989. doi: 10.6052/0459-1879-12-148

大普朗特数大液桥浮力-热毛细对流地面实验

doi: 10.6052/0459-1879-12-148
基金项目: 国家自然科学基金重点基金项目(11032011, 10972224), 中国科学院方向性项目(KJCX2-YW-L08)和载人航天空间科学项目资助.
详细信息
    通讯作者:

    康琦

  • 中图分类号: O363.2

GROUND EXPERIMENTS OF BOUYANT THERMOCAPILLARY CONVECTION OF LARGE SCALE LIQUID BRIDGE WITH LARGE PRANDTL NUMBER

Funds: The project was supported by the National Natural Science Foundation of China (11032011, 10972224), the Chinese Academy of Sciences Directional Project (KJCX2-YW-L08) and the Manned Space Space Science Project.
  • 摘要: 通过地面实验研究大尺寸液桥的浮力-热毛细对流. 实验采用2cst硅油(Pr=28.571),研究了不同高径比(A=l/d)和体积比的液桥起振,分析了温度振荡频率及相位变化,探讨了热流体波的问题. 实验液桥的桥柱直径为20mm,由于受重力的限制,建立了3~4.25mm范围内的矮桥. 通过伸入液桥内部不同位置的热电偶的温度信号,发现流场是同时起振的,不同的桥高和体积比有不同的振荡模式,并且随着温差的增加,频率近似以线性增加,各点的振荡相位是一个连续性变化的过程. 不同高径比的液桥转捩到混沌的途径是不一样的.

     

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出版历程
  • 收稿日期:  2012-05-21
  • 修回日期:  2012-07-10
  • 刊出日期:  2012-11-18

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