Abstract
The control of ultrasonic atomization is important in its various application fields. Even though the acoustic fountain’s shape is directly related to the quantity of atomized droplets, theoretical analysis of the shape has not been sufficient. In this study, a theoretical analysis model for analyzing the fountain shape caused by ultrasound is suggested. The fountain shape was examined theoretically and experimentally for various input acoustic powers, radiation areas of the ultrasonic transducer, and depths of the liquid. The results showed that the maximum height of the fountain for ultrasonic atomization occurred for a depth of 7 cm when the 1.5 cm diameter ultrasonic transducer was driven by 2-MHz continuous wave in water. We confirmed that the suggested model provided the optimum liquid depth considering the effects of attenuation with increasing propagating distance of the ultrasound.
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