冷却面に衝突する水滴の相界面変動に関する数値シミュレーション

抄録

The purpose of this study is to elucidate the effects of solidification on time changes in interfaces of an impinging water droplet. We carried out two-dimensional numerical simulations on the freezing of the droplet impinging on a cooling surface using a Phase-field method. The computational results show that the ice growth along the cooling surface and air/water interface started during the period of interface fluctuation caused by the impingement of the droplet. Eventually, the droplet became an ice particle with a small projection to the top. In addition, the temperature field was disturbed by latent heat transfer and the recirculating flow generated in the wake of the impinging droplet.