...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics >Dynamic contact angle and liquid displacement of a droplet impinging on heated textured surfaces
【24h】

Dynamic contact angle and liquid displacement of a droplet impinging on heated textured surfaces

机译：撞击加热纹理表面的液滴动态接触角和液体位移

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

This study investigates the temporal evolution of the dynamic contact angle (DCA) of a droplet impinging on the flat and textured surfaces with different surface temperatures of 30 degrees C, 50 degrees C, and 80 degrees C. The hole-patterned textured surfaces are manufactured by using a drilling machine with two texture area fractions to examine the variation in DCA according to the Weber number, surface temperature, and texture area fraction. It is found that at low Weber number, the DCAs on the textured surfaces are larger than those on the flat surface in the first spreading and receding phases. The measured DCA shows the increasing tendency with the increase in the texture area fraction. On the contrary, the measured DCA becomes smaller for impinging droplet with higher Weber number on the textured surfaces because the inertia effect becomes dominant and the liquid penetration through the holes occurs. Moreover, we analyze the wetting and non-wetting pressures for better understanding of the liquid displacement on the hole-patterned textured surface. The DCAs on the textured surfaces increase with the surface temperature, affecting a substantial decrease in the viscous energy dissipation and enhancing the recoiling momentum.
机译：本研究研究了滴注在扁平和纹理表面上的液滴的动态接触角（DCA）的时间演变，具有30摄氏度的不同表面温度，50℃和80℃。制造空穴图案化纹理表面通过使用带有两个纹理区域分数的钻孔机来检查DCA的变化，根据韦伯数，表面温度和纹理面积分数。发现，在低韦伯号时，纹理表面上的DCA大于第一扩散和后退相中的平坦表面上的DCA。测量的DCA显示出随着纹理面积分数的增加而增加的趋势。相反，测量的DCA变小，用于撞击纹理表面上具有较高韦伯号的液滴，因为惯性效应变得优势，并且发生通过孔的液体穿透。此外，我们分析了润湿和非润湿压力，以便更好地理解空穴图案化纹理表面上的液体位移。纹理表面上的DCA随表面温度而增加，影响粘性能量耗散的显着降低，增强重塑动量。

著录项

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