摘要
Droplets icing has important applications in real life.The icing process of droplets on microstructure is explored based on the MDPDE method in this study.Firstly,the correctness of the heat transfer model was verified by one-dimensional heat conduction simulation,and then the feasibility of the phase change model was verified by investigating the icing process of droplets.The influence of cold surface temperature,droplet volume and contact angle on freezing time of droplets was discussed,and it was found that the temperature of cold surfaces had a greater effect on freezing.We finally explored the influence of different microstructure surfaces on the icing of droplets,and results showed that the presence of microstructures greatly enhanced the anti-icing effect of the surface.In our research,the contact angle is a relatively large factor affecting the icing of droplets.In addition,it was discovered that the droplet had the strongest ability to delay freezing on the surface of triangle microstructures with a contact angle of 157.1°.
基金
supported by the National Numerical Windtunnel Project(Grant Nos.NNW2019ZT2-B05,NNW2019ZT2-B26)
the National Natural Science Foundation of China(Grant Nos.11972215,12072174).
作者简介
Correspondence:Xiwen Zhang,zhangxiw@tsinghua.edu.cn。
