Effect of Eccentric Distance on Successive Dual-droplet Impacting a Super-hydrophobic Tube

Kaimin Wang, Han Chen, Jiawei Liu, Hongyu Ge, Hongsheng Liu, Xiaohua Liu, F.-N. Shi, G. Korotcenkov, Y.-L. Lin, R. Dastjerdi, J.-S. Li, D. Dobrota
2021 E3S Web of Conferences  
Droplet impact is a common but significant phenomenon in industry. The CLSVOF (coupled level set and volume-of-fluid) method is used to numerically study the successive dual-droplet impacting a super-hydrophobic tube. For the impact velocity of 1.0 m/s, the effect of the eccentric distance on dynamic characteristics is analysed, the corresponding eccentric distances are 0.5, 1.0 and 2.0, respectively. In addition, the break-up during rebound is analysed with velocity field and pressure
more » ... . Results show that, the eccentric distance hinders the spread during the initial period of spreading. With the increase in eccentric distance, more liquid gathers at the eccentric side and the liquid film might rebound easily without break-up under the same impact velocity. The break-up during rebound mainly depends on the local airflow and pressure difference. The high-pressure zone near the solid-liquid interface moves towards the eccentric side with the increase in eccentric distance.
doi:10.1051/e3sconf/202129901002 fatcat:ogghz34tqjflfavngiv4m4rism