If the spray is modeled by Lagrangian droplet model, than this should be not such a difficult task. The drone rotor downwash is the result of a rotor-stator prediction with a prescribed rotating motion for the rotor.

Regards,

Dr. Th. Frank.

Thanks Thomas I'll look into the Lagrangian droplet method. I already have the downwash results for both single and multiple rotors.

What I am trying to figure out now is how to I translate the result of the downwash to how it affects the spray droplets ?

Thanks regards

Oluwasheyi O