An SPH modeling of bubble rising and coalescing in three dimensions
A robust three-dimensional multiphase SPH model is applied taking care on combining the advantages of different SPH models. A suitable multiphase interface treatment is applied and the time integration method is modified for better stability. Background pressure is shown to play an important role in keeping the multiphase interface stable when the Bond number is relatively small. Bubble rising and coalescing are simulated in three dimensions. A wide validation is performed with both experimental data and other numerical results.
sph surface tension rising bubble bubble coalescence multiphase flow