Numerical Analysis of Dynamic and Heat Transfer Characteristics of Droplet Sprayed in Pressurizer

This paper established the dynamic model of the single droplet and the model of unsteady heat transfer between the droplet and steam,and compiled the computer program according to the characteristics formulation by Fortran language.And the dynamic and heat transfer parameters of single droplet are calculated according to various initial velocities,dimensions and injection angles.Calculation results indicate that the hang time of the droplet is determined by the vertical distance between the spray head and the steam-liquid interface.The most heat is accomplished shortly after the droplet leaving the spray head.The initial velocity and the injection angle hardly affect the droplet-steam heat transfer quantity,and heat transfer quantity between the droplet and steam is decided by the droplet dimension.