| Pr数对环形浅液池热毛细对流的影响 |
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| 引用本文： | 石万元,李友荣,彭岚.Pr数对环形浅液池热毛细对流的影响[J].工程热物理学报,2011(2):250-254. |
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| 作者姓名： | 石万元 李友荣 彭岚 |
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| 作者单位： | 重庆大学动力工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(No.50976128); 教育部留学回国人员启动基金(教外司留(2009)1001-1); 重庆市自然科学基金项目(CSTC2008BB4301); 中国博士后基金项目(No.20080440694) |
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| 摘 要： | 为了解流体普朗特数(Pr)对热毛细对流的影响,通过线性稳定性分析,确定了环形浅液池内硅熔体(Pr＝0.011)和几种硅油(Pr数从6.7至57.9)热毛细对流失稳的临界条件,获得了它们在临界条件下的热流体波,特别是高Pr数硅油的热流体波.结果发现:当Pr≤15.9时,临界Ma数随Pr数的增加迅速上升,此时环形池内只有一...
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| 关 键 词： | 热毛细对流 普朗特数 线性稳定性分析 热流体波 |
EFFECT OF PRANDTL NUMBER ON THERMOCAPILLARY CONVECTION IN SHALLOW ANNULAR POOLS |
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| SHI Wan-Yuan LI You-Rong PENG Lan.EFFECT OF PRANDTL NUMBER ON THERMOCAPILLARY CONVECTION IN SHALLOW ANNULAR POOLS[J].Journal of Engineering Thermophysics,2011(2):250-254. |
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| Authors: | SHI Wan-Yuan LI You-Rong PENG Lan |
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| Institution: | SHI Wan-Yuan LI You-Rong PENG Lan (College of Power Engineering,Chongqing University,Chongqing 400044,China) |
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| Abstract: | In order to understand the effect of Prandtl(Pr) number on thermocapillary convection instability,the thermocapillary convection in shallow annular pools of silicon melt(Pr = 0.011) and silicone oils with Pr number ranging from 6.7 to 57.9 are investigated using linear stability analysis. The hydrothermal waves(HW) and their critical conditions for the incipience of HWs are determined, especially for those at high value of Pr number.The results indicate that the Ma_c increases sharply with increasing Pr num... |
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| Keywords: | thermocapillary convection Prandtl number linear stability analysis hydrothermal wave |
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