Open Access

ARTICLE

Numerical Analysis on Unsteady Internal Flow in an Evaporating Droplet

Zhentao Wang^1,*, Kai Dong, Shuiqing Zhan

1 School of Energy and Power Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China.

* Corresponding author: Zhentao Wang. Email: .

Fluid Dynamics & Materials Processing 2017, 13(4), 221-234. https://doi.org/10.3970/fdmp.2017.013.221

Abstract

We have investigated the unsteady internal flow occurring in an evaporating droplet interacting with a high-temperature atmospheric environment. The Navier-Stokes equations for both the liquid and the gas phases have been solved numerically in the framework of a Volume of Fluid (VOF) method relying on the so-called Continuum Surface Force (CSF) model. A specific kernel able to account for evaporation and related phase change has been incorporated directly in the VOF approach. The temperature distributions within the droplet has been found to be relatively uniform by virtue of the Marangoni flow. The transient evolution of the flow pattern and related heat exchange effects have been also investigated.

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Keywords

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