2024 年 38 巻 2 号 p. 132-138
Understanding multiphase flows with phase change is of fundamental importance for the optimal design and operation of polymer processing. However, the study of multiphase flows with phase change is challenging in practice because polymers have complex physical properties and it is difficult to obtain precise thermal-hydraulic measurements of multiphase flows with phase change due to the high temperatures involved in polymer processing. Computational simulations overcome many of these difficulties and thus provide an essential alternative to study intricate thermal-hydraulic mechanisms not easily observed in a laboratory setting. In this article, I review the current state-of-the-art as well as outstanding challenges in the study of multiphase flows with phase change in polymer processing through the author’s computational studies on the motion of bubbles and drops with phase change.