Numerical Simulation of Bubble Growth and Departure on Heat Transfer Surface

In order to predict the performance of cooling method using an evaporative latent heat, which is applied in various acceleration environments, fundamental of nucleate boiling must be understood. This study aims at the analysis of boiling by a numerical method of the two-phase flow considering phase change. CIP-LSM (CIP-based Level Set & MARS) which is a numerical method for free surface flows using interface tracking method is made to resolve an interface sharply in order to estimate the mass transfer and energy transfer more faithfully. It is stable and robust even for large density and viscosity rations on the order of 1000 to 1. Additionally, CIP-LSM implemented a phase change model is used to handle boundary conditions imposed at liquid-gas interface, including velocity jump conditions due to volume change and heat flux jump conditions due to latent heat and can simulate a Stefan program of evaporation successfully. This paper presents an analyses related to single bubble behavior during nucleate boiling at and near a heated surface in order to validate the reliability of this model. About the effect of the phase change model, good agreement was obtained between numerical result and experimental results.