What is it about?
The transient heating of an evaporating spherical droplet suspended in a hot gaseous environment is analyzed by assuming that the radius of the droplet is fixed during each stage of the vaporization process. Truncated expansions in short time limits are obtained for the surface, center, and volume-average temperatures of the droplet. The new analytical solutions are found to be more computationally efficient since they are accurate and fairly simple.
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Why is it important?
The new analytical solutions are obtained as a function of the known time-varying temperature of the gaseous environment in the immediate vicinity of the droplet. They can therefore be useful in modeling transient heating and evaporation of spherical droplets, as is the case in computational fluid dynamics (CFD) calculations for sprays.
Perspectives
The new model is to be used for different types of fuel droplets and the results will be compared with those of classical models in CFD calculations for sprays.
Dr Kwassi Anani
Universite du Lome
Read the Original
This page is a summary of: New approximate analytical solutions for time-step models of vaporizing droplets, January 2022, American Institute of Physics,
DOI: 10.1063/5.0095301.
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