排灌机械工程学报2025，Vol.43Issue(7)：701-707,7.DOI:10.3969/j.issn.1674-8530.23.0234
恒定压力波作用下气泡振荡现象的理论分析
Theoretical analysis of bubble oscillation phenomenon under constant pressure wave action
摘要
Abstract
The bubble oscillation under the constant pressure waves action was investigated.Based on the small perturbation method,the Rayleigh-Plesset equation describing the basic motion of bubble wall under constant pressure waves was analytically solved.Based on the analytical solution,the cha-racteristics of bubbles oscillation under pressure waves were analyzed from three aspects:initial condi-tions,pressure value of pressure waves,and dissipation.The expression for bubble oscillation in vis-coelastic fluids was also given.Besides,the differences of bubble oscillation between viscoelastic fluids and water were compared and studied.The main conclusions include that under the constant pressure wave,the bubble radius exhibits oscillatory variations.When dissipation exists,the amplitude of the bubble oscillation gradually decreases,ultimately tending towards a stable state.The oscillation ampli-tude of the dimensionless bubble radius is influenced by the bubble initial position,initial velocity,and the amplitude of the pressure wave.As the dissipation increases,the oscillation amplitude of the dimensionless bubble radius decreases,and the oscillation frequency also decreases.Compared to the bubbles in water,the bubbles in viscoelastic fluids exhibit smaller oscillation amplitudes and higher os-cillation frequencies.This is due to the fact that the dissipation of the bubbles in viscoelastic fluids is greater than that in water.关键词
泡动力学/压力波/能量耗散/黏弹性流体/振荡幅值Key words
bubble dynamics/pressure waves/energy dissipation/viscoelastic fluids/oscillation amplitude分类
农业科技引用本文复制引用
杜萱,张宇宁..恒定压力波作用下气泡振荡现象的理论分析[J].排灌机械工程学报,2025,43(7):701-707,7.基金项目
国家自然科学基金资助项目(51976056) （51976056）
