| 池沸腾中临界热流密度的一个分形模型 |
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| 引用本文： | 肖波齐,陈志远.池沸腾中临界热流密度的一个分形模型[J].三明学院学报,2006,23(4):381-384,398. |
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| 作者姓名： | 肖波齐 陈志远 |
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| 作者单位： | 1. 三明学院,物理与机电工程系,福建,三明,365004
2. 咸宁学院,物理系,湖北,咸宁,437005 |
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| 摘 要： | 提出了临界热流密度的一个分形模型,根据加热表面活化点的分形分布得到了临界热流密度的表达式,从该模型中发现大空间临界热流密度(CHF)是壁面过热度、接触角和流体物理特性的函数。接触角对临界热流密度有重要的影响。沸腾表面模型预测的结果与实验数据进行了比较,两者是极好的吻合。
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| 关 键 词： | 池沸腾 临界热流密度 分形 |
| 文章编号： | 1673-4343（2006）04-0381-04 |
| 收稿时间： | 2006-10-24 |
| 修稿时间： | 2006-10-24 |
A Fractal Model for Critical Heat Flux in Pool Boiling |
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| XIAO Bo-qi,CHEN Zhi-yuan.A Fractal Model for Critical Heat Flux in Pool Boiling[J].Journal of Sanming University,2006,23(4):381-384,398. |
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| Authors: | XIAO Bo-qi CHEN Zhi-yuan |
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| Institution: | 1.Department of Physics and Electromechanical Engineering, Sanming University, Sanming 365004, China; 2. Department of Physics, Xianning College, Xianning 437005, China |
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| Abstract: | In this paper,a fractal model for the critical heat flux(CHF) is proposed.The expression for the critical heat flux(CHF) is derived based on the fractal distribution of nucleation sites on boiling surfaces.The proposed fractal model for CHF is found to be a function of wall superheat,the contact angle and physical properties of fluid.The contact angle has the important effects on CHF.The predicted CHF from a boiling surface based on the proposed fractal model is compared with the existing experimental data.An excellent agreement between the proposed model predictions and experimental data is found. |
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| Keywords: | pool boiling CHF fractal |
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