The Behavior of a Gas Bubble in a Square Cavity Filled with a Viscous LiquidUndergoing Vibrations  

作　　者：Tatyana Lyubimova Yulia Garicheva Andrey Ivantsov 

机构地区：[1]Computational Fluid Dynamics Lab,Institute of Continuous Media Mechanics,Ural Branch of the Russian Academy of Sciences,Perm,614013,Russia [2]Theoretical Physics Department,Perm State University,Perm,614990,Russia

出　　处：《Fluid Dynamics & Materials Processing》2024年第11期2417-2429,共13页流体力学与材料加工（英文）

基　　金：supported by the Ministry of Science and High Education of Russia(Theme No.121031700169-1).

摘　　要：External vibrations are known to be one of the promising ways to control the behavior of multiphase systems. Thecomputational modeling of the behavior of a gas bubble in a viscous liquid in a horizontal cylinder of squarecross-section, which undergoes linearly polarized translational oscillations in weightless conditions, has been carried out. Under vibrations, the bubble moves towards the wall of the vessel with acceleration determined by theamplitudes and frequency of vibrations. Near the wall, at a distance of the order of the thickness of the viscousStokes boundary layer, the effects of viscosity become more important and, as a result, the bubble is repelled fromthe wall. After some oscillations, equilibrium conditions are attained where the attractive force balances the repulsive force;accordingly, the average position of the bubble ceases to change. The numerical modelling shows thatthe average behaviors of a deformable bubble near a wall under normal and tangential vibration are similar.

关 键 词：BUBBLE vibrations VISCOSITY average force 

分 类 号：O35[理学—流体力学]