Numerical Simulation of Foam Structure Formation and Destruction Process Using Phase-Field Model

Numerical simulations of foam structure formation and destruction process were demonstrated using a phase field model. Two types of additional terms to control the cell size were introduced to the conventional multi-phase field model; one is to maintain the initial cell size, and the other is to adjust the size of neighboring cells to be equalized to each other. As a result, different types of foam structures were obtained according to the introduced effect of the extra terms. Destruction process was also simulated under simple assumptions; instantaneous bursts of cell wall occur intermittently at random sites, and the cell coarsening is accelerated when a certain time has passed. The intended variation was successfully observed, and the effectiveness of the model was confirmed.