冲击波作用下气泡动态响应数值研究

Dynamic Response of a Bubble to an Impinging Shockwave

采用边界元法模拟冲击波作用下气泡动态响应,应用Mixed-Eulerian-Lagrangian(MEL)法模拟气泡的演化。分别模拟规则冲击波和爆破冲击波与气泡的相互作用,三维数值模型计算结果与已有实验数据进行对比,结果表明,计算值与实验数据吻合良好,验证了计算模型的有效性。改变冲击波参数和气泡初始状态及特征参数,研究不同参数下气泡的动力学特性,得出规律性曲线。

The dynamic response of a bubble to an impinging shockwave is simulated by boundary element method,and the evolution of the bubble is simulated with Mixed-Eulerian-Lagrangian method.The interaction between the bubble and the regular shockwave or typical impinging shockwave is simulated respectively,and the calculated results of the three-dimensional model are compared with the experimental data.It is found that the calculated results coincide well with the experimental data,which shows that the algorithm and 3D model are effective and feasible.Through changing the parameters of shockwave and initial bubble state,corresponding dynamic characteristics of the bubble are studied and several curves for describing the regularity are obtained.