Numerical study on subcooled pool boiling

This study focuses on the clarification of the heat transfer characteristics of the subcooled pool boiling, the discussion on its mechanism, and the establishment of a boiling and condensation model for direct numerical simulation on the subcooled pool boiling phenomena. In this paper, three dimensional numerical simulations based on the MARS (Multi-interface Advection and Reconstruction Solver) with a boiling and condensation model which consisted of the improved phase-change model and the relaxation time based on the quasi-thermal equilibrium state have been conducted for the bubble growth process in the subcooled pool boiling. The numerical results regarding the bubble growth process of the subcooled pool boiling show in good agreement with the experimental observation results and the existing analytical equations among Rayleigh, Plesset and Zwick and Mikic et al. Therefore, it was found that the improved boiling and condensation model with the relaxation time consideration can predict the bubble growth process of the subcooled pool boiling phenomena. (author)