Global collocation approximations of the flow and temperature fields around a gas and a vapour bubble

The global collocation method has been applied to potential and viscous flow fields around a bubble. For a rotationally symmetric gas bubble, jet formation, initial acceleration, detachment from a horizontal wall and the motion induced by a surface tension gradient have been studied. For a spherically symmetric vapor bubble implosion and growth have been considered and the bubble radius and temperature are found to oscillate. The computed results have been compared with available experimental data. For a bubble surrounded by an infinitely extended liquid the global collocation method turns out to be particularly useful.