抄録
Numerical analysis regarding collapsing behavior of a single bubble which is closely related to the material damage has been done. In this study, gas-liquid interface was modeled as the gas-liquid two-phase homogeneous medium. Then, energy equation was also taken into account, and the approximate Rieman solver was introduced to solve the discontinuities numerically. To begin with, the collapsing behavior of a single bubble was analyzed for the purpose of the detailed elucidation of the complicated process. Present analysis was compared to the numerical solution of Rayleigh-Plesset equation. The following were also clarified: Not only collapsing behavior of the bubble including the information of temperature but also whole flow field behavior. Also, regarding bubble collapse time, the solution by the present method agreed with the numerical Rayleigh-Plesset solution, and it was confirmed that the present method is applicable to the nonlinear analysis of the bubble behavior.
