The rising and breakup characteristics of a single bubble in a liquid under a uniform vertical electric field were investigated using numerical simulations.The phase field method was used to capture the shape change of bubbles.The effects of electric field strength on bubble rising velocity,liquid jet velocity and breakup time were investigated.The results show that the electric field has a significant effect on the bubble motion.The higher the electric field intensity,the higher the bubble rising speed and liquid jet velocity.The effects of the initial shape of the bubble on its rising and breakup characteristics under the electric field were examined.The results show that within the range of Boe=0-20,the breakup time decreases with the increase of the electric field strength for the elliptical bubbles with initial ratio of horizontal and vertical axes of 1.3 and 1.0 while it increases for that of 0.8.
关键词
电场/气泡破碎/气液两相流动/非球形气泡
Key words
electric field/bubble breakup/gas-liquid two-phase flow/non-spherical bubbles
维普
万方数据