Numerical Simulation of the Cutting of a Rising Bubble by a Horizontal Cylinder = Numerische Simulation von Zerteilung einer steigenden Blase durch einen Horizontalen Zylinder

The study is devoted to the numerical simulation of bubble interaction with horizontal cylinder. The phase field method is used. It is firstly validated for free bubble rising in a planar domain. The numerical result is consistent with benchmark from literature. The numerical method is applied to the study of bubble behavior of cutting by solid cylinder under different conditions. Planar simulation is performed to investigate the influence of different bubble diameter (4.57 mm-7.8 mm) and contact angle (60°-120°). The results are in qualitative consistence with experiment. 3D simulations are made for further quantitative investigation. To reduce the calculation cost, adaptive refinement is discussed and applied in the discretization of the domain. 3D simulation shows the deformation by the cutting comprehensively and confirms the conclusion of the previous experiment investigation that the cylinder is completely wetted by the cutting. At last, the behavior of the satellite bubble under different conditions is studied. However, the mesh resolution is turns out to to be not enough for a precise description of this phenomena.