| 过热液氦均匀核化速率的确定 |
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| 引用本文： | 董磊,林文胜,鲁雪生. 过热液氦均匀核化速率的确定[J]. 低温与超导, 2006, 34(2): 109-113 |
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| 作者姓名： | 董磊 林文胜 鲁雪生 |
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| 作者单位： | 上海交通大学制冷与低温工程研究所,上海,200030;上海交通大学制冷与低温工程研究所,上海,200030;上海交通大学制冷与低温工程研究所,上海,200030 |
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| 摘 要： | 预测不同压力下过热液氦的均匀核化速率是十分重要的,它与液氦的极限过热度密切相关。文中通过回顾动力学理论、分子聚集理论、涨落理论等研究液体均匀核化的方法,对过热液氦的均匀核化速率进行了计算,并且对各种方法进行了比较与分析。结果表明,用能量涨落理论来计算过热液氦的均匀核化速率是一种比较合理的方法。
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| 关 键 词： | 液氦 均匀核化速率 动力学理论 分子聚集理论 涨落理论 |
| 修稿时间： | 2005-10-17 |
Prediction of the homogeneous nucleation rate of superheated liquid helium |
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| Dong Lei,Lin Wensheng,Lu Xuesheng. Prediction of the homogeneous nucleation rate of superheated liquid helium[J]. Cryogenics and Superconductivity, 2006, 34(2): 109-113 |
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| Authors: | Dong Lei Lin Wensheng Lu Xuesheng |
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| Abstract: | It is quite important to predict the homogeneous nucleation rate of superheated liquid helium under different pressures,because it is connected closely with the limit of superheat temperature of liquid helium.In this paper,the homogeneous nucleation rates of superheated liquid helium are calculated by reviewing methods of the kinetic,the molecular aggregation and the fluctuation theory which are used to research on homogeneous nucleation of liquids,and besides,applicabilities of these calculation methods are compared and analyzed.It turns out that it is a reasonable method to calculate the homogeneous nucleation rate of superheated liquid helium with the energy fluctuation theory. |
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| Keywords: | Liquid helium Homogeneous nucleation rate Kinetic theory Molecular aggregation theory Fluctuation theory |
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