• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Molecular dynamics simulation of droplet nucleation and growth on a rough surface: revealing the microscopic mechanism of the flooding mode
【24h】

Molecular dynamics simulation of droplet nucleation and growth on a rough surface: revealing the microscopic mechanism of the flooding mode

机译：液滴成核和粗糙表面生长的分子动力学模拟：揭示洪水模式的微观机理

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

Droplet nucleation and growth have a significant influence on dropwise condensation heat transfer. Controlling the droplet nucleation and growth with a high-precision surface to realize the dropwise condensation heat transfer enhancement is a promising method. Molecular dynamics simulation is employed to investigate the effects of heat flux, surface wettability and adjacent droplet size on the new droplet's nucleation and growth. Simulation results indicate that the high heat flux can lead to droplet nucleation and growth inside the rough structure and finally a Wenzel droplet will form due to the coalescence between the inside droplet and the initial existing droplet. However, for a surface with a larger contact angle, the droplet in the Wenzel state will transfer to the Cassie state due to droplet coalescence. In addition, it is also related to the size of the existing droplet whether or not the nucleation process occurs. For the first time, the droplet nucleation radius is introduced to quantitatively determine the droplet nucleation state (inside or outside the nanostructures) and whether the droplet could achieve the state transition from Wenzel to Cassie or not in the growth process.
机译：液滴成核和生长对滴缩热传热具有显着影响。用高精度表面控制液滴成核和生长以实现滴缩热传递增强是一种有希望的方法。使用分子动力学模拟来研究热通量，表面润湿性和相邻液滴尺寸对新液滴的核心和生长的影响。仿真结果表明，高热量通量可以导致粗糙结构内的液滴成核和生长，最后由于内部液滴和初始现有液滴之间的聚结而形成温革液滴。然而，对于具有较大接触角的表面，由于液滴结合，温革态中的液滴将转移到Cassie状态。此外，它还与现有液滴的大小有关，无论是否发生成核过程。首先，引入液滴成核半径以定量地确定液滴成核状态（纳米结构内部或外部），并且液滴是否可以在生长过程中实现从Wenzel到Cassie的状态转变。

著录项

  • 来源
    《RSC Advances》 |2018年第43期|共8页
  • 作者

    Niu Dong; Tang GuiHua;

  • 作者单位

    Xi An Jiao Tong Univ Sch Energy &

    Power Engn MOE Key Lab Thermofluid Sci &

    Engn Xian 710049 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ Sch Energy &

    Power Engn MOE Key Lab Thermofluid Sci &

    Engn Xian 710049 Shaanxi Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 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