各種液体中での音波と弾性管を用いた気泡発生制御

抄録

In a fundamental research of bubbly flows, it is required a technique for the bubble generation control in various liquid such as silicone oil, chemicals and so on. We have developed a bubble generation method that uses a slit elastic tube and an acoustic pressure wave in gas phase. Elastic silicone tubes were used for the bubble generation section in the early study. However, the silicone tube was deformed and expanded in a silicone oil, and bubble generation control was failed. In this study, four types of elastic tubes were tested as the bubble generation section to achieve the bubble generation control in a silicone oil. As a result, the fluorine-contained rubber tube that contains none of the plasticizer held original shape in the silicone oil. And its elastic response to the acoustic pressure wave was enough to control bubbles. On the contrary, large acoustic pressure was required to generate bubble using this tube compared to the silicone tube.