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二维微柱阵列壁面对活性剂液滴铺展的影响

李春曦 陈朋强 叶学民

李春曦, 陈朋强, 叶学民. 二维微柱阵列壁面对活性剂液滴铺展的影响[J]. 力学学报, 2014, 46(5): 665-672. doi: 10.6052/0459-1879-14-099
引用本文: 李春曦, 陈朋强, 叶学民. 二维微柱阵列壁面对活性剂液滴铺展的影响[J]. 力学学报, 2014, 46(5): 665-672. doi: 10.6052/0459-1879-14-099
Li Chunxi, Chen Pengqiang, Ye Xuemin. EFFECT OF TWO-DIMENSIONAL MICROPILLAR ARRAYED TOPOGRAPHY ON SPREADING OF INSOLUBLE SURFACTANT-LADEN DROPLET[J]. Chinese Journal of Theoretical and Applied Mechanics, 2014, 46(5): 665-672. doi: 10.6052/0459-1879-14-099
Citation: Li Chunxi, Chen Pengqiang, Ye Xuemin. EFFECT OF TWO-DIMENSIONAL MICROPILLAR ARRAYED TOPOGRAPHY ON SPREADING OF INSOLUBLE SURFACTANT-LADEN DROPLET[J]. Chinese Journal of Theoretical and Applied Mechanics, 2014, 46(5): 665-672. doi: 10.6052/0459-1879-14-099

二维微柱阵列壁面对活性剂液滴铺展的影响

doi: 10.6052/0459-1879-14-099
基金项目: 国家自然科学基金(11202079)和中央高校基本科研业务费专项基金(13MS97)资助项目.
详细信息
    作者简介:

    李春曦,副教授,主要研究方向:活性剂液滴铺展动力学特性,液体薄膜流动特性,旋转机械动力学特征及运行经济性.E-mail:leechunxi@163.com

  • 中图分类号: TK124;O357.1

EFFECT OF TWO-DIMENSIONAL MICROPILLAR ARRAYED TOPOGRAPHY ON SPREADING OF INSOLUBLE SURFACTANT-LADEN DROPLET

Funds: The project was supported by the Fund of the National Natural Science Foundation of China (11202079) and the Fundamental Research Funds for the Central Universities of Ministry of Education of China (13MS97).
  • 摘要: 针对二维微柱阵列壁面上含不溶性活性剂液滴的铺展过程,采用润滑理论建立了液膜厚度和浓度演化模型,采用数值计算方法得到了液滴的铺展特征及相关参数的影响. 研究表明:活性剂液滴在微柱阵列壁面上铺展时,在壁面凸起处衍生出隆起结构,壁面凹槽处衍生出凹陷结构,随时间持续,隆起和凹陷均向两侧移动,且数量不断增加. 活性剂液膜流经凸起时,隆起高度呈驼峰形变化. 增大预置液膜厚度或活性剂初始浓度,铺展区域隆起和凹陷数量增多,液滴铺展速度加快. 增加凹槽深度或减小斜度会使毛细力作用增强,液膜破断可能性加大;增大凹槽宽度可加速活性剂液滴的铺展,加剧液膜表面波动幅度.

     

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出版历程
  • 收稿日期:  2014-04-08
  • 修回日期:  2014-05-28
  • 刊出日期:  2014-09-18

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