A CORRELATIONAL APPROACH TO TURBULENT SATURATED FILM BOILING

A correlation method for saturated film boiling is proposed. The corre lation is based on the analogy between film boiling and natural convec tion. As in the case of natural convection, the turbulent film boiling correlation takes the form of a Nusselt number versus the Rayleigh nu mber power law, Nu(B) is-proportional-to Ra(B)1/3. The proposed correl ation shows very good agreement with current data for film boiling of water from vertical surfaces. The general applicability of the correla tion is established by comparisons with film boiling data from R-113 a nd cryogenic fluids.