INTERFACIAL CONDITIONS AND EVAPORATION RATES OF A LIQUID DROPLET
INTERFACIAL CONDITIONS AND EVAPORATION RATES OF A LIQUID DROPLET
复制标题
DOI：
10.1016/0021-9797(74)90080-0
复制
发表时间：
1974-01-01
影响因子：
9.9
通讯作者：
DAVIS, EJ
中科院分区：
文献类型：
--
作者：
CHANG, R;DAVIS, EJ
突然暴露于不饱和气体介质中的液滴的非稳态蒸发问题可以用积分方程来求解。通过考虑液滴中的不均匀温度场以及液滴周围连续体中的不均匀温度和浓度场，可以预测液滴表面的温度历史。确定随时间变化的表面温度对蒸发速率的影响，并计算界面温度达到渐近极限所需的时间。该解决方案的新颖之处在于，它严格考虑了液滴内部的温度分布以及液滴的焓平衡。通过严格考虑适当的材料和能量平衡，可以避免一些先前解决方案中物理上不可能的不连续性。
The problem of unsteady state evaporation of a liquid droplet suddenly exposed to an unsaturated gaseous medium is solved in terms of integral equations. By taking into account the nonuniform temperature field in the droplet and the nonuniform temperature and concentration fields in the continuum surrounding the droplet the temperature history of the droplet surface is predicted. The effect of the time-varying surface temperature on the evaporation rate is determined, and the time required for the interfacial temperature to reach an asymptotic limit is calculated. The novel feature of this solution is that it rigorously takes into account the temperature distribution inside the drop as well as an enthalpy balance on the drop. By rigorously taking into account the appropriate material and energy balances the physically impossible discontinuities of some previous solutions are avoided.