MECHANISMS OF THIN-FILM EVAPORATION CONSIDERING MOMENTUM AND ENERGY CONSERVATION

被引：0
|
作者：
Yan, Chunji [1 ]
Pan, Xinxiang [1 ]
Lu, Xiaowei [1 ]
机构：
[1] Dalian Maritime Univ, Marine Engn Coll, Inst Marine Engn & Thermal Sci, Dalian 116026, Peoples R China
来源：
PROCEEDINGS OF THE ASME 4TH INTERNATIONAL CONFERENCE ON MICRO/NANOSCALE HEAT AND MASS TRANSFER - 2013 | 2014年
关键词：
HEAT-TRANSFER; MENISCUS;
D O I：
暂无
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
A mathematic model, which can be used to predict the evaporation and fluid flow in thin film region, is developed based on momentum and energy conservations and the augmented Young-Laplace equation in this paper. In the model the variations of the enthalpy and kinetics energy of the thin-film along the evaporating region are considered. By theoretical analysis, we have obtained the governing equation for thin film profile. The fluid flow and phase-change heat transfer in an evaporating extended meniscus are numerically studied. The differences between the model considering momentum conservation only and including both momentum and energy conservations are compared. It is found that the maximum heat flux of the thin-film evaporation by using two mathematical models obtained has no change, but when considering the momentum and energy conservations the total heat transfer rate unit width along the thin-film evaporation region is greater than that of only including momentum equation.
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页数：6
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