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Internal flow in evaporating droplet on heated solid surface

机译:加热的固体表面上蒸发液滴中的内部流动

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摘要

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.
机译:这项工作使用一个全面的模型来数值研究液滴在加热的固体表面上的蒸发过程。在考虑浮力,热毛细作用力和粘性阻力的影响的同时,阐明了蒸发液滴内的内部流动。通过同时求解液体域的Navier-Stokes方程和能量方程以及固体域的热传导方程,对蒸发过程进行建模,同时假设液-气界面为自由表面。利用三个无量纲参数来描述各个驱动力对内部流动的贡献。讨论了蒸发过程中热流和内部流的演变。体积变化与实验数据吻合良好。

著录项

  • 来源
    《International Journal of Heat and Mass Transfer》 |2011年第20期|p.4437-4447|共11页
  • 作者单位

    Key Laboratory for Thermal Science and Power Engineering of MOE, Tsinghua University, Beijing 100084, China;

    Key Laboratory for Thermal Science and Power Engineering of MOE, Tsinghua University, Beijing 100084, China;

    Beijing Key Laboratory of New and Renewable Energy, North China Electric Power University, Beijing 102206, China;

    Department of Chemical Engineering, College of Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    droplet; internal flow; evaporation; buoyancy force; thermocapillary force;

    机译:液滴;内部流动;蒸发;浮力;热毛细作用力;

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