| 珠状凝结换热的数学物理模型及数值模拟 |
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| 引用本文： | 吴玉庭,杨春信,袁修干,马重芳. 珠状凝结换热的数学物理模型及数值模拟[J]. 计算物理, 2001, 18(4): 334-340 |
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| 作者姓名： | 吴玉庭 杨春信 袁修干 马重芳 |
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| 作者单位： | 北京航空航天大学,北京,100083;北京工业大学,北京,100022 |
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| 基金项目： | 国家自然科学基金(59706007)资助项目 |
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| 摘 要： | 首次应用随机分形模型建立了珠状凝结液滴的空间和尺度分布,然后利用已有的单个液滴的传热规律,得到了冷凝壁面的换热边界条件,进而求解冷凝壁的温度分布,最后得到了平均的珠状凝结换热系数.应用上述模型对铜表面以水为介质的冷凝壁换热进行了直接数值模拟,并与各种压力条件下的试验数据进行了比较.
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| 关 键 词： | 珠状凝结 传热 分形 数值模拟 |
| 文章编号： | 1001-246X(2001)04-0334-07 |
| 收稿时间： | 2000-02-25 |
| 修稿时间： | 2000-02-25 |
MATHEMATICAL AND PHYSICAL MODEL AND NUMERICAL SIMULATION OF DROPWISE CONDENSATION HEAT TRANSFER |
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| WU Yu-ting,YANG Chun-xin,YUAN Xiu-gan,MA Chong-fang. MATHEMATICAL AND PHYSICAL MODEL AND NUMERICAL SIMULATION OF DROPWISE CONDENSATION HEAT TRANSFER[J]. Chinese Journal of Computational Physics, 2001, 18(4): 334-340 |
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| Authors: | WU Yu-ting YANG Chun-xin YUAN Xiu-gan MA Chong-fang |
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| Affiliation: | 1. Department of Flying Vehicle Design and Applied Mechanics, Beijing University of Aeronautics and Astronautics, Beijing 100083, P R China;2. College of Enviromental and Energy |
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| Abstract: | A random fractal model of the drop size and space distribution in dropwise condensation is presented.The boundary conditions of heat conduction through the condensate wall are defined by use of the heat transfer model through a single drop proposed by Rose.Thus,the mathematical model of dropwise condensation heat transfer is established.A numerical simulation of dropwise condensation heat transfer of water on the copper wall has been performed.The results agree well with the bulk of existing experimental data and the precision is higher than that of the model proposed by Rose. |
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| Keywords: | dropwise condensation heat transfer fractal numerical simulation |
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