在吃惊重的煤气的水泡相互作用的喷气形成上的声学的阻抗和吃惊力量的影响数字地在这个工作被学习。与克或一个 SF6 水泡交往的震动的过程被数字方法 VAS2D 学习。作为确认,平面震动加速的一个 SF6 水泡的实验被执行。结果显示由于声学的阻抗的失配,在有不同种类的重煤气的水泡的喷气形成的方法在一样的起始的条件下面是多样化的。关于一样的水泡,喷气形成的方式在不同吃惊力量下面也是显然不同的。声学的阻抗的不同导致吃惊集中在冲击波的水泡,和不同行为在内并且在水泡外面的不同效果。波浪模式和压力变化的分析显示喷气形成仔细与压力不安被联系。而且,涡度免职的分析,和循环和 baroclinic 转矩的比较证明 baroclinic 涡度也贡献喷气形成。压力不安和 baroclinic 涡度免职是为在吃惊重的煤气的水泡相互作用的喷气形成的二个主导的因素,这被结束。
The influences of the acoustic impedance and shock strength on the jet formation in shock-heavy gas bubble interaction are numerically studied in this work. The process of a shock interacting with a krypton or a SF6 bubble is studied by the numerical method VAS2D. As a validation, the experiments of a SF6 bubble accelerated by a planar shock were performed. The results indicate that, due to the mismatch of acoustic impedance, the way of jet formation in heavy gas bubble with different species is diversified under the same initial condition. With respect to the same bubble, the manner of jet formation is also distinctly different under different shock strengths. The disparities of the acoustic impedance result in different effects of shock focusing in the bubble, and different behaviors of shock wave inside and outside the bubble. The analyses of the wave pattern and the pressure variation indicate that the jet formation is closely associated with the pressure perturbation. Moreover, the analy- sis of the vorticity deposition, and comparisons of circulation and baroclinic torque show that the baroclinic vorticity also contributes to the jet formation. It is concluded that the pres- sure perturbation and baroclinic vorticity deposition are the two dominant factors for the jet formation in shock-heavy gas bubble interaction.