Centrifugal rotary disk atomizer, spray

Huang and Mujumdar (2007) were the first to investigate a spray dryer fitted with a centrifugal atomizer using a CFD model. In their model, they model the rotary disk atomization into the disk side point injection which is the same as the holes in the disk. 

Rotating Nozzle (rotary atomizer) fluid is fed at low pressure to the center of a rapidly rotating disk and centrifugal force breaks up the fluid. These types of nozzles are used mainly in a spray drying application. 

Spray production by methods involving high-speed ejection of a liquid through an orifice (nozzle atomization) and ejection from a spinning disk by centrifugal force (rotary atomization) are the simplest and most important situations because they require knowledge of only one material velocity—that of the liquid. Spray production by the action of an incident air stream on a jet of liquid involves, of course, the velocity of both the liquid and the air. 

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