Numerical Analysis of Bubble Rising Behavior in a Liquid Metal Using MPS

Moving Particle Semi-Implicit（MPS） Method has advantages over the traditional mesh-based methods in the accurate capture of the vapor-liquid interface.In the present study,the numerical simulation of single bubble rising behavior in the liquid Pb-Bi alloy had been performed.The numerical results are provided for bubble shape deformation and rising velocity.Numerical simulation results indicate that as the bubble rises,the bubble exhibits in turn spherical,dimpled ellipsoidal,spherical-cap shapes.Terminal velocity of the bubble predicted by MPS agrees well with that predicted by Grace and increases with the initial bubble diameter.