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首页> 外文期刊>International Journal of Heat and Mass Transfer >Thermal and solutal effects on convection inside a polymer solution droplet on a substrate
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Thermal and solutal effects on convection inside a polymer solution droplet on a substrate

机译：热和稀释对基板上聚合物溶液小滴内部对流的影响

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摘要

The convective now inside polymer solution droplets drying on a lyophobic substrate is numerically studied. The evaporating droplet is presumed as a hemisphere shrinking with time at the constant contact angle. The thermal and solutal effects are simultaneously considered in the computation. The thermal Marangoni convection is induced due to the quick thermal diffusion, and this convection transports the solute resulting in the solutal Marangoni flow. The solutal dependence corresponds to our previous experimental work, but the flow pattern does not. Consideration of the pseudo evaporation rate distribution depending on the contact angle yields to the flow pattern correspondence.
机译：现在对在疏液基质上干燥的内部对流聚合物溶液液滴进行了数值研究。假设蒸发的液滴是在恒定接触角下随时间收缩的半球。在计算中同时考虑了热效应和溶液效应。由于快速的热扩散而引起了热马兰戈尼对流，这种对流传输了溶质，导致了马兰戈尼溶液的流动。对溶液的依赖性与我们以前的实验工作相对应，但与流动模式无关。考虑取决于接触角的假蒸发速率分布，得出了流型对应。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2010年第22期|p.4448-4457|共10页
  • 作者

    Masayuki Kaneda; Yuu Takao; Jun Fukai;

  • 作者单位

    Department of Mechanical Engineering, Osaka Prefecture University, 1-1 Cakuencho, Naka-ku, Sakai, Osaka 599-8531, Japan;

    Department of Chemical Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan;

    rnDepartment of Chemical Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan;

  • 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

    drying; natural convection; surface tension; evaporation rate;

    机译：烘干;自然对流;表面张力;蒸发速率;

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