|
| Study on the rebound and breakup of the droplet after impacting on the super-hydrophobic wall |
| Received:October 10, 2014 Revised:December 25, 2014 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201601017 |
| KeyWord:droplet impact super-hydrophobic wall rebound breakup numerical simulation |
| Author | Institution |
| 刘冬薇 |
北京交通大学 机电工程学院, 北京 |
| 宁智 |
北京交通大学 机电工程学院, 北京 |
| 吕明 |
北京交通大学 机电工程学院, 北京 |
| 阎凯 |
北京交通大学 机电工程学院, 北京 |
| 孙春华 |
北京交通大学 机电工程学院, 北京 |
|
| Hits: 2412 |
| Download times: 1647 |
| Abstract: |
| The surface hydro-philicity has an important effect on the variation process of the droplet intensively when the droplet impacts on the wall.In this paper, the motion of the droplet after impacting on the super-hydrophobic wall are studied by using the coupled Level Set-VOF method for gas-liquid interface tracking.The results show that the droplet with low velocity will rebound after impacting on the super-hydrophobic wall, while the droplet with high velocity will breakup after impacting on the super-hydrophobic wall.As the initial droplet diameter increases and the surface tension decreases, the spreading-breakup phenomenon occurs more easily when the droplet impacts on the super-hydrophobic wall.Also, the impact angle has a great effect on the movement of the droplet impacting on the super-hydrophobic wall.In addition, the critical conditions of rebound and breakup are summarized respectively by numerical simulation when the droplet impacts on the super-hydrophbic wall by vertical and inclined angle. |
|
|
|