An extensional formulation for a diffusive solution of the level-set equation

(application to phase change fluid interface)

Abstract

This paper introduces a new model formulation for the source term of the conservation equation in three-dimensional interface phenomena, which gives a diffusive solution of the level-set equation coupled with a re-initialization procedure. A gas-liquid interface model including the phase change and surface tension mechanism is derived as normal extension and curvature flow of interface by the new extensional level-set equation.