Temperature discontinuity at the surface of an evaporating droplet
Temperature discontinuity at the surface of an evaporating droplet
复制标题
蒸发液滴表面的温度不连续性
DOI：
10.1063/1.1471363
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发表时间：
2002
影响因子：
3.2
通讯作者：
C. A. Ward
中科院分区：
文献类型：
--
作者：
A. McGaughey;C. A. Ward
在一系列实验中，人们发现蒸发水滴的表面存在温度不连续性。统计速率理论已用于预测每个实验期间的实验不确定性内的蒸汽压力。虽然观察到 D2 定律的定性趋势与测量结果一致，但它低估了测量的蒸发率 21%–37%。当D2定律考虑温度不连续性时，预测值与实测值之间的差异最多为7%。结果表明，实验中的速率限制过程不是 D2 定律中假设的气相扩散，而是界面动力学。
In a series of experiments, a temperature discontinuity has been found to exist at the surface of an evaporating water droplet. Statistical rate theory has been used to predict the pressure in the vapor to within the experimental uncertainty during each of the experiments. While the qualitative trend of the D2 law is observed to be consistent with the measurements, it underpredicts the measured rate of evaporation by 21%–37%. When the temperature discontinuity is taken into account in the D2 law, the difference between the predicted and measured values is at most 7%. The results suggest that the rate limiting process in the experiments is not diffusion in the gas phase, as is assumed in the D2 law, but is the interface kinetics.