• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Heat Transfer >Mesoscopic Analysis of Dynamic Droplet Behavior on Wetted Flat and Grooved Surface for Low Viscosity Ratio
【24h】

Mesoscopic Analysis of Dynamic Droplet Behavior on Wetted Flat and Grooved Surface for Low Viscosity Ratio

机译：低粘度比的湿润平坦沟槽表面上动态液滴行为的细观分析

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In the present study, the interfacial dynamics of displacement of three-dimensional spherical droplet on a rectangular microchannel wall considering wetting effects are studied. The two-phase lattice Boltzmann Shan-Chen model is used to explore the physics. The main focus of this study is to analyze the effect of wettability, low viscosity ratio, and capillary number on the displacement of spherical droplet subjected to gravitational force on flat as well as grooved surface of the channel wall. The hydrophobic and hydrophilic natures of wettabilities on wall surface are considered to study for viscosity ratio, M <1. The results are presented in the form of temporal evolution of wetted length and wetted area for combined viscosity ratios and wettability scenario. In the present study, it is observed that in dynamic droplet displacement, the viscosity ratio and the capillary number play a significant role. It is found that as the viscosity ratio increases, both the wetted area and the wetted length increase and decrease in the case of hydrophilic and hydrophobic wettable walls, respectively. The groove area on the vertical wall tries to entrap fraction of droplet fluid in case of hydrophilic surface of the vertical wall, whereas in hydrophobic case, droplet moves past the groove without entrapment.
机译：在本研究中，研究了考虑润湿效应的矩形微通道壁上三维球形液滴位移的界面动力学。使用两相晶格玻尔兹曼山-陈模型来探索物理学。这项研究的主要重点是分析可湿性，低粘度比和毛细管数对在重力作用下通道壁平坦和沟槽表面上球形液滴位移的影响。考虑了在壁表面上的润湿性的疏水性和亲水性，以研究粘度比M <1。对于组合的粘度比和润湿性情况，结果以润湿长度和润湿面积随时间变化的形式表示。在本研究中，观察到在动态液滴位移中，粘度比和毛细管数起着重要作用。发现随着粘度比的增加，在亲水性和疏水性可湿性壁的情况下，润湿面积和润湿长度分别增加和减少。在垂直壁的亲水表面的情况下，垂直壁上的凹槽区域试图截留液滴流体的一部分，而在疏水情况下，液滴移动通过凹槽而没有截留。

著录项

  • 来源
    《Journal of Heat Transfer》 |2017年第5期|052002.1-052002.11|共11页
  • 作者

    Amaresh Dalai; Saurabh Bhardwaj;

  • 作者单位

    Department of Mechanical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India;

    Department of Mechanical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India;

  • 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

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号