A numerical method is presented for analysis of film boiling in free-surface jet impingement on a hot surface. The conservation equations of mass, momentum and energy are numerically solved in the liquid, vapor and air phases. The level-set formulatio...
A numerical method is presented for analysis of film boiling in free-surface jet impingement on a hot surface. The conservation equations of mass, momentum and energy are numerically solved in the liquid, vapor and air phases. The level-set formulation for tracking a liquid-gas interface is modified to include the effect of phase change. Also, to efficiently account for the very thin vapor film forming on a high-temperature wall, a simplified microscale vapor film model based on lubrication approximation is incorporated into the macroscale level-set formulation. The multiscale method is applied to investigate the film boiling characteristics in jet impingement.