Abstract：Droplet trajectory of rotary disk centrifugal atomization nozzle is difficult to be solved by analytical method and traced by test means. The
droplet movement physical equations were obtained by force analysis and solved by standard fourth order RungeKutta algorithm based on Matlab platform. The
horizontal and vertical velocity curves and the droplet trajectories were also obtained. A centrifugal atomization test equipment was established to test the
droplet deposition distribution characteristics. The results show that under the atomization conditions with speed of 6 000 r·min-1 and flow rate of 700 mL
·min-1, the droplet horizontal speed rapidly decreases from 15.71 m·s-1 to 0. The droplet vertical velocity rapidly increases from 0 to a certain speed,
and the droplet landing velocity and the horizontal displacement are increased with the increasing of droplet size. Compared the theoretical values of
horizontal displacement of different diameter droplets with the experimental values, the relative errors are less than 5.31%, which indicates that motion
model is derived and solved correctly.
2017, Vol. 38 
