Large Scale Dynamics and Partial Coalescence of Soap Bubbles

We present simulations of the large scale dynamics of soap films. Our model uses a thin, axisymmetric interface, with finite thickness and mass. The interface is treated as a two dimensional front, and we track the local thickness and surfactant concentration. We present results on the coalescence of soap bubbles of different sizes. Conditions are found under which this coalescence is only partial.