Numerical Simulation of Bubble Behavior before Inclined Solidified Front

抄録

In order to investigate bubble behavior before inclined solidified front, a numerical simulation model is developed, in which level set method and modified heat transfer equation is applied to simulate the dynamic evolution of gas-liquid interface and solidification process under a fixed grid frame. Meanwhile, an in-situ experiment of bubble behavior before inclined ice solidified front was exacted to validate the numerical model. The effects of bubble diameter, inclined angle of solidified front and cooling rate on its behavior are investigated both numerically and experimentally. The results show that as bubble diameter increasing, inclined angle increasing and cooling rate decreasing, the bubble entrapment possibility is decreasing. Each critical point for entrapment is also studied numerically.