液滴加热和蒸发的模拟:液滴收缩的影响

IF 1.3 Q3 THERMODYNAMICS
S. Tonini, G. Cossali
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引用次数: 3

摘要

研究了单组分球形液滴蒸发到气体环境中的传热传质过程,放松了通常采用的准稳态近似,并考虑了液滴在气体环境中突然浸入所引起的固有不稳定性。蒸发引起的水滴半径缩小解决了一个移动边界问题,通过适当的坐标变换将其转化为一个固定边界问题。通过物种和能量守恒方程的数值解,以及不同物种(水、正辛烷、正十二烷、乙醇)在液滴上的总质量和能量平衡,量化了热速率、蒸发速率和液滴直径演变。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Modelling of liquid drop heating and evaporation: the effect of drop shrinking
The process of heat and mass transfer from a spherical mono-component liquid drop evaporating into a gas environment is investigated, relaxing the commonly adopted quasi-steady approximation and accounting for the inherent unsteadiness caused by the sudden immersion of a liquid drop in a gaseous environment. The drop radius shrinking due to evaporation settles a moving boundary problem, which is transposed to a fixed boundary one by a proper coordinate transformation. The heat and evaporation rates and the drop diameter evolution are quantified by numerical solution of the species and energy conservation equations and the overall mass and energy balances over the drop for different species (water, n-octane, n-dodecane, ethanol).
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来源期刊
CiteScore
2.70
自引率
6.70%
发文量
36
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