| 环形浅液池内中等Pr数流体的热毛细对流 |
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| 引用本文： | 李友荣,彭岚,吴双应,全晓军,李明伟,曾丹苓.环形浅液池内中等Pr数流体的热毛细对流[J].工程热物理学报,2004,25(3):484-486. |
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| 作者姓名： | 李友荣 彭岚 吴双应 全晓军 李明伟 曾丹苓 |
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| 作者单位： | 重庆大学动力工程学院,重庆,400044 |
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| 基金项目： | 国家自然科学基金(No.50376078) |
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| 摘 要： | 为了了解微重力下水平温度梯度作用时环形浅液池内的热毛细对流特性,利用有限差分法进行了非稳态二维数值模拟,环形液池外壁被加热,内壁被冷却,流体为 0.65 cSt的硅油,其Pr 数为 6.7。结果表明,当温度梯度较小时,流动为稳态流动,随着温度梯度的增加,流动将会失去其稳定性,转化成各种振荡流动,模拟结果与实验结果基本吻合。
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| 关 键 词： | 热毛细对流 数值模拟 环形浅池 |
| 文章编号： | 0253-231X(2004)03-0484-03 |
| 修稿时间： | 2003年12月14 |
THERMOCAPILLARY CONVECTION IN A THIN ANNULAR POOL FOR MODERATE PRANDTL NUMBER FLUID |
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| LI You-Rong,PENG Lan,WU Shuang-Ying,QUAN Xiao-Jun,LI Ming-Wei,ZENG Dan-Ling College of Power Engineering,Chongqing University Chongqing ,China.THERMOCAPILLARY CONVECTION IN A THIN ANNULAR POOL FOR MODERATE PRANDTL NUMBER FLUID[J].Journal of Engineering Thermophysics,2004,25(3):484-486. |
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| Authors: | LI You-Rong PENG Lan WU Shuang-Ying QUAN Xiao-Jun LI Ming-Wei ZENG Dan-Ling College of Power Engineering Chongqing University Chongqing China |
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| Institution: | LI You-Rong,PENG Lan,WU Shuang-Ying,QUAN Xiao-Jun,LI Ming-Wei,ZENG Dan-Ling College of Power Engineering,Chongqing University Chongqing 400044,China |
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| Abstract: | In order to understand the nature of thermocapillary convection under microgravity in
a differentially heated annular pool with the outer heated cylinder and the inner cooled cylinder, we
conducted a series of unsteady two-dimensional numerical simulations with the finite volume method.
The pool was filled with the 0.65 cSt silicone oil (Prandtl number Pr=6.7). Results showed that the
flow is stable at the small temperature difference in the radial direction. With the increasing of the
temperature difference, the simulation can predict oscillatory thermocapillary flows. It is found that
there is a good agreement between the simulation and experiment results. |
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| Keywords: | thermocapillary convection numerical simulation thin annular pool |
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