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分离压对波状基底上活性剂液滴铺展过程的影响

李春曦 杨保才 叶学民

李春曦, 杨保才, 叶学民. 分离压对波状基底上活性剂液滴铺展过程的影响[J]. 力学学报, 2015, 47(1): 71-81. doi: 10.6052/0459-1879-14-161
引用本文: 李春曦, 杨保才, 叶学民. 分离压对波状基底上活性剂液滴铺展过程的影响[J]. 力学学报, 2015, 47(1): 71-81. doi: 10.6052/0459-1879-14-161
Li Chunxi, Yang Baocai, Ye Xuemin. EFFECT OF DISJOINING PRESSURE ON SPREADING OF LIQUID DROPLET CONTAINING SURFACTANT OVER CORRUGATED TOPOGRAPHY SURFACE[J]. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(1): 71-81. doi: 10.6052/0459-1879-14-161
Citation: Li Chunxi, Yang Baocai, Ye Xuemin. EFFECT OF DISJOINING PRESSURE ON SPREADING OF LIQUID DROPLET CONTAINING SURFACTANT OVER CORRUGATED TOPOGRAPHY SURFACE[J]. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(1): 71-81. doi: 10.6052/0459-1879-14-161

分离压对波状基底上活性剂液滴铺展过程的影响

doi: 10.6052/0459-1879-14-161
基金项目: 国家自然科学基金(10972077,11202079)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: TQ021;O363

EFFECT OF DISJOINING PRESSURE ON SPREADING OF LIQUID DROPLET CONTAINING SURFACTANT OVER CORRUGATED TOPOGRAPHY SURFACE

Funds: The project was supported by the National Natural Science Foundation of China (10972077, 11202079) and the Fundamental Research Funds for the Central Universities of Ministry of Education of China (13MS97).
  • 摘要: 针对波状基底上含不溶性活性剂液滴的铺展过程,引入受活性剂浓度影响的分离压模型,应用润滑理论建立了液滴高度和活性剂浓度演化方程组,通过数值计算方法得到了分离压作用下含活性剂液滴过程的演化特征. 研究表明:分离压作用下的液滴演化时间显著缩短,铺展速率加快,铺展前沿处衍生出的子波结构明显减少,铺展更加稳定;分离压对液滴铺展稳定性的影响与活性剂关联强度密切相关,减小引力强度系数α1有利于促进液滴的铺展,而减小斥力强度系数α2则起抑制作用,且放大了液滴的演化扰动能量,致使液滴铺展呈现不稳定特征;增加基底高度D或波数k均使液滴铺展速率减慢.

     

  • 叶学民, 李春曦, 阎维平. 切应力协同下受热过冷层流液膜的破断特性. 力学学报, 2011, 43(3): 461-467 (Ye Xuemin, Li Chunxi, Yan Weiping. Breakdown of locally heated and subcooled laminar films with interfacial shear. Chinese Journal of Theoretical and Applied Mechanics, 2011, 43(3): 461-467 (in Chinese))
    叶学民, 李春曦, 王松岭. 界面剪切力作用下波状液膜流的水动力稳定性. 力学学报, 2009, 41(3): 307-312 (Ye Xuemin, Li Chunxi, Wang Songling. Hydrodynamic stability of a liquid wavy film with interfacial shear. Chinese Journal of Theoretical and Applied Mechanics, 2009, 41(3): 307-312 (in Chinese))
    李春曦. 含活性剂液滴的铺展过程研究. [博士论文]. 保定: 华北电力大学, 2011 (Li Chunxi. Spreading of a surfactant-laden drop on thin liquid film. [PhD Thesis]. Baoding: North China Electric Power University, 2011 (in Chinese))
    Edmonstone BD, Craster RV, Matar OK. Surfactant-induced fingering phenomena beyond the critical micelle concentration. Journal of Fluid Mechanics, 2006, 564: 105-138  
    王松岭, 李春曦, 叶学民. 温度和活性剂浓度梯度协同驱动的液滴铺展特性. 化工学报, 2011, 62(9): 2512-2519 (Wang Songling, Li Chunxi, Ye Xuemin. Drop spreading characteristics driven by gradients of temperature and surfactant concentration. Journal of Chemical Industry and Engineering, 2011, 62: 2512-2519 (in Chinese))
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    叶学民, 沈雷, 李春曦. 分离压对含活性剂液膜流去湿过程的影响. 西安交通大学学报, 2013, 47(3): 96-101 (Ye Xuemin, Shen Lei, Li Chunxi. Effect of disjoining pressure on dewetting of thin film flows containing surfactant. Journal of Xi'an Jiaotong University, 2013, 47(3): 96-101(in Chinese))
    李春曦, 裴建军, 叶学民. 波纹状基底上含不溶性活性剂液滴的铺展过程. 化工学报, 2013, 64(9): 3308-3316 (Li Chunxi, Pei Jianjun, Ye Xuemin. Spreading of liquid droplet containing insoluble surfactant over corrugated surface. Journal of Chemical Industry and Engineering, 2013, 64(9): 3308-3316 (in Chinese))
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    叶学民, 姜凯, 沈雷等. 含活性剂超薄液膜演化过程的稳定性研究. 力学学报, 2013, 45(5): 681-689 (Ye Xuemin, Jiang Kai, Shen Lei, et al. Stability of ultrathin liquid film evolution with surfactant. Chinese Journal of Theoretical and Applied Mechanics, 2013, 45(5): 681-689 (in Chinese))
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    叶学民, 姜凯, 李春曦. 分离压结合压作用下的活性剂液滴演化特征. 化工学报, 2013, 64(10): 3581-3589 (Ye Xuemin, Jiang Kai, Li Chunxi. Droplet spreading with soluble surfactant under disjoining pressure/conjoining pressure. Journal of Chemical Industry and Engineering, 2013, 64(10): 3581-3589 (in Chinese))
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出版历程
  • 收稿日期:  2014-06-04
  • 修回日期:  2014-09-01
  • 刊出日期:  2015-01-18

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