Influence of initial spray angle on heat and mass transfer in vertical spray chambers

Establishes the two-dimensional mathematical models of water droplet movement, heat and mass transfer and entransy. Makes the numerical calculation of heat and mass transfer and entransy by the fourth-order Runge-Kutta method, and analyses the water droplet movement time, running distance and heat and mass transfer parameters of air and water in the spray chamber at different initial spray angles. The results show that at a constant initial velocity, the duration time and movement distance of water droplets would be longer in the spray chamber, the heat transfer rate and the entransy loss would increase along with the initial angle decreases, but all the changes are very small.