Particle motion in the spray region of a semicircular spouted-fluidized bed coating device was investigated. Radial and axial particle velocity and voidage profiles were obtained using computer-based video imaging techniques and custom software. In order to investigate the effect of liquid droplets on fluidized particles in the spray region, measurements were carried out both with and without an atomized water spray fed to the bed. In the draft tube region, radial profiles of particle velocities varied from parabolic to nearly flat. At the spray rates used in this work there was no difference in velocity and voidage measurements with or without spray.
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Saadevandi et al. (2004) studied this question.
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