Note on rotating cup atomizer theory

Abstract: Rotating cup atomizer, along with other rotary atomizers, are used in industrial furnaces, as they generate droplets of a nearly uniform size and process a high capability in handling large fuel flow rates. This work compares the existing droplet size distribution available in the literature and based on Tanasawa et al. fully experimental models with an extension of a theoretical model primarily developed for fan spray atomizers which has been recently improved for impinging jets and then modified to fit the behavior of Y-jet atomizers and pressure swirl atomizers. The results were found quite satisfactory for case of reasonably viscous fluids but not so for low viscosity ones the reason possibly being that Tanasawa's correlation does not contain the viscosity coefficient.