Turbulent Jet Theory Applied to Air Sprayers

ABSTRAC THE air sprayer is represented as a fan jet by means of turbulent jet theory. Equations describing air velocities at any point in the air sprayer jet are given as a function of outlet velocity and sprayer outlet configura-tion. Both lateral and axial air velocity profiles were measured in air jets produced by two orchard air spray-ers. These measured velocities agreed with values calcu-lated from equations developed from ideal turbulent fan jet theory. The equations given can be used to design a sprayer with an optimum combination of outlet width and exit velocity.