Question

Pesticides are dispersed as evaporating droplets by airplane. The droplets must be completely vaporized before reaching the ground. The droplet evaporation can be assumed as saturation and diffusion controlled.

1) List governing mechanisms (e.g., mass, momentum and heat transfer) and major assumptions for problem simplification;

2) Establish a model for controlling parameters, including initial droplet size, airplane speed, flight height, and ambient air conditions (temperature and humidity). Discuss the model closure.

Answer 1