Application of VOF method to the calculation of growth and collapse of a vapor bubble in pulse-heated liquid

摘要

Bubbles generated in conductive ink heated directly by electric current pulses can be used in an ink-jet printer to eject ink-droplets. To simulate the growth and collapse of a vapor bubble and behavior of liquid around it in a single printer head, a VOF (Volume of Fluid) method modified for computing the liquid-vapor interface with phase change was adopted. The incompress- ible continuity, momentum and energy equations for the liquid around the bubble were solved for the 2-D axisymmetric system.