标题：Kinetics of cavitation bubble in ultrasonic degassing of casting aluminium alloy
作者：Liu, Miao ;Zhai, Peng ;Long, Qiang ;Wang, Chunyang ;Xiao, Bohan
作者机构：[Liu, Miao ;Zhai, Peng ;Long, Qiang ;Wang, Chunyang ;Xiao, Bohan ] School of Mechanical Electrical & Information Engineering, Shandong University, Wei 更多
会议名称：Spring International Conference on Material Sciences and Technology, MST-S 2017
会议日期：April 18, 2017 - April 20, 2017
来源：Materials Science Forum
摘要：Severe regassing was detected by previous experiment on degassing method for aluminium-silicon alloy by injecting argon with rotation. In order to further degas, ultrasonic degassing was adopted. To describe the cavitation bubblesf movement, traditional Rayleigh-Plesset equation was modified. Classic Rayleigh-Plesset equation is strongly restricted by the applicable condition that the centre of the bubble is fixed. In this paper, a position-related Rayleigh-Plesset equation is proposed to describe the cavitation bubble's floating movement in aluminium-silicon alloy of 750Ž with the coefficient of viscosity of 0.0012. As the calculation results, a bubble stimulated by high-low-frequency vibration can float up faster with violent vibration.
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