Effects of Additional Inertia Force on Bubble Breakup

Through VOF two-phase flow model,the single bubble deformation and breakup in a vertical narrow channel is numerically investigated in this study based on the force balance at the process of bubble breakup.The effect of surface tension force,the additional inertia force and bubble initial shape on bubble breakup are analyzed according to the velocity variation at the break-up point and the minimum necking size when the bubble is breaking up.It is found that the surface tension force,the additional inertia force and the bubble initial shape have significant effects on the bubble breakup through the fluid injection toward to the bubble,which finally induces the onset of bubble breakup.