| 微细通道相变传热动力学特性研究 |
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| 引用本文： | 罗小平.微细通道相变传热动力学特性研究[J].华南理工大学学报(自然科学版),2008,36(7). |
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| 作者姓名： | 罗小平 |
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| 作者单位： | 华南理工大学机械与汽车工程学院,广东广州510640 |
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| 基金项目： | 国家自然科学基金，教育部留学回国人员科研启动基金 |
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| 摘 要： | 对微细通道相变传热的动力学特性进行了研究,通过引入汽液固三相分子间产生的不连续压力及Lie对称性分析获得了描述汽液接触界面的微分动力系统，并对0.6mm?2mm的矩形微槽进行了实验，获得了压力时间序列，对该序列的功率谱分析表明，在7.39Hz以上的频段，系统出现了混沌，从而表明微通道的高效传热性能与系统的混沌特征有一定的关系。利用所得微分动力系统对本实验的混沌特征进行了模拟，获得了奇异吸引子相图，所得结论与实验结果一致。
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| 关 键 词： | 微细通道 相变传热 混沌 Lie对称性 |
| 收稿时间： | 2008-1-30 |
| 修稿时间： | 2008-3-31 |
Research on Dynamic Properties of Micro Channel Phase Change Heat Transfer System |
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| Xiaoping Luo.Research on Dynamic Properties of Micro Channel Phase Change Heat Transfer System[J].Journal of South China University of Technology(Natural Science Edition),2008,36(7). |
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| Authors: | Xiaoping Luo |
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| Abstract: | This paper has studied the dynamic properties of micro channel phase change heat transfer system. Liquid vapor dynamic system was obtained by introducing disjoining pressure produced by three phases molecular interactions and Lie symmetry analysis. Experiments for 0.6mm2mm channel were carried out to obtain the pressure sequence. Power spectrum density analysis for this serial shows that the system is in chaotic state if the frequency is above 7.39Hz.The result indicates that high heat transfer performance of micro channel phase change system may relate to the characteristics of chaos. The strange attractor was drawn by the simulation of the obtained differential dynamic system and corresponded with our experiment. |
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| Keywords: | Micro Channel Phase Change Heat Transfer Chaos Lie Symmetry |
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