Numerical simulation of rising bubble behavior under accelerating conditions

Yoshida, Hiroyuki  ; Nagatake, Taku ; Takase, Kazuyuki; Kaneko, Akiko*; Monji, Hideaki*; Abe, Yutaka*

In this study, two-phase flow simulation method under earthquake conditions has been developed based on a detailed two-phase flow simulation code with an advanced interface tracking method TPFIT. And developed simulation method is validated for two-phase flow under earthquake conditions by comparing predicted results with measured results. In this paper, rising bubble behavior under accelerating conditions was simulated by using the developed simulation method based on the TPFIT. Moreover, predicted time series of bubble shapes were compared with measured results. In the results, predicted bubble behavior including bubble shape and lean angle agreed with measured data observed by the high speed camera. Furthermore, a time lag of bubble lean angle to acceleration of vibration was almost the same as measured results.