Analysis of Droplet Motion in Air Engine Washing Technology

In the process of air engine water washing, the effect of which would be influenced by the characterization of liquid sheet. A numerical method is put forward for the research of motion of liquid drop in the aero-engine to simulate the movement law when the particle enters into the front of the engine from nozzle. Firstly, the mathematical model of movement is established to describe droplet moving behavior locating the engine intakes, which is three-dimensional, based on movements of a small sphere subject the forces on the droplet and the droplet physical properties. Then, the model is solved using the four order Runge-Kutta method, considering the coupling effect of the multi force field including gravity, drag force and so on. Finally, the motion velocity and the trajectory of the drop-lets are obtained. And the distribution law of the droplet is calculated. Compared with the calculation results of other mathematical models, the results prove the correctness of the model.