Internal flow in evaporating droplet on heated solid surface
Internal flow in evaporating droplet on heated solid surface
复制标题
加热固体表面上蒸发液滴的内部流动
DOI：
10.1016/j.ijheatmasstransfer.2011.04.039
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发表时间：
2011-09-01
影响因子：
5.2
通讯作者：
Lee, Duu-Jong
中科院分区：
文献类型：
--
作者：
Lu, Gui;Duan, Yuan-Yuan;Lee, Duu-Jong
本文利用一个综合模型数值模拟了液滴在受热固体表面上的蒸发过程。在考虑浮力、热毛细力和粘性阻力的影响下，阐明了蒸发液滴的内部流动。蒸发过程是通过同时求解Navier-Stokes方程和能量方程的液体域和热传导方程的固体域，同时假设液-汽界面是一个自由表面。利用三个无量纲参数来描述单个驱动力对内部流动的贡献。蒸发过程中的热量和内部流动的演变进行了讨论。体积演化与实验数据吻合较好。(C)2011爱思唯尔有限公司保留所有权利。
This work numerically studies the evaporation process of a liquid droplet on a heated solid surface using a comprehensive model. The internal flow within the evaporating liquid droplet is elucidated, while considering the effects of buoyancy force, thermocapillary force, and viscous resistance. The evaporation process is modeled by simultaneously solving the Navier-Stokes equations and energy equation for the liquid domain and the heat conduction equation for the solid domain, while assuming the liquid-vapor interface is a free surface. Three dimensionless parameters are utilized to describe the contribution of individual driving forces to internal flow. Evolutions of the thermal and internal flows during evaporation are discussed. The volume evolution and experimental data are in good agreement. (C) 2011 Elsevier Ltd. All rights reserved.