A Film-Theory-Based Model for a Multicomponent Droplet Evaporation at Both Low- and High-Pressure Environments

[+] Author and Article Information
Guangfa Yao

 Simulatech, LLC, 7624 William Moyers NE, Albuquerque, NM 87122yao@simulatechs.com

J. Heat Transfer 128(3), 290-294 (Aug 31, 2005) (5 pages) doi:10.1115/1.2151197 History: Received February 03, 2005; Revised August 31, 2005

Modeling of a multicomponent droplet evaporation is investigated based on the film theory in both low- and high-pressure environments. Unlike the classical film theory, effects of blowing due to evaporation on gas-side heat and mass transfer are included through the film thicknesses. The corresponding gas-side heat and mass transfer equations are derived in terms of film thicknesses. In a high-pressure situation, the real gas behavior is considered. Based on the derived equations, a new model for multicomponent droplet evaporation is formulated and validated against the published data.

Copyright © 2006 by American Society of Mechanical Engineers
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Grahic Jump Location
Figure 1

The history of droplet radius, mass, velocity, and ratio of liquid heating to gas side heat transfer rate. Symbols: fully numerical date; Lines: model predictions.

Grahic Jump Location
Figure 2

Comparison with experimental measurements of Daif (14-15) for droplet radius and surface temperature. Symbols: experimental data; Lines: model predictions.

Grahic Jump Location
Figure 3

Comparison with the experiments of Stengle (16) for predicted and measured droplet velocity and diameter along the droplet trajectory in a high-pressure environment. Symbols: experimental data; Lines: model predictions.



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