Two-dimensional modeling of water spray cooling in superheated steam

摘要

Spray cooling of the superheated steam occurs with the interaction of many complex physical processes, such as initial droplet formation, collision, coalescence, secondary break up, evaporation, turbulence generation and modulation, as well as turbulent mixing, heat, mass and momentum transfer in a highly nonuniform two-phase environment. While it is extremely difficult to systematically study particular effects in this complex interaction in a well defined physical experiment, the interaction is well suited for numerical studies based on advanced detailed models of all the processes involved. This paper presents results of such a numerical experiment. In the present study, the attempt was made to model the water spray cooling into the superheated steam and investigate the effects of the pressure and velocity of the superheated steam on the evaporation rate of the cooling water. The results show that by increasing the pressure and velocity of the superheated steam, the evaporation rate of cooling water increases.