Effective Vibration Mode of Ultrasonic Transducers for Low Flow Rate Spraying
S. Ofuji, S. Tsuyuki, T. Kanda, S. Miyake
Okayama University, Okayama, Japan
S. Kawasaki, National Institute of Advanced Industrial Science and Technology, Sendai-shi, Japan
In this study, we have fabricated ultrasonic transducers for low flow rate spraying and evaluated an effect of a vibration to atomization using the Weber number. Three types of transducers which have different vibrational mode have been compared. Those vibrational modes are flexural, torsional, and longitudinal modes. A surface tension which is one of parameters of the Weber number was changed by the ultrasonic vibration. To evaluate the performance of the spraying device, we observed the spray angle and the atomization state. When a water was sprayed, the spray angle of the flexural transducer was the largest. In addition, the flexural vibration was also effective for the spraying of ethylene glycol. As a result, the flexural vibration is suitable for low flow rate spraying.
ACTUATOR 2016 Manuscript P 11
Publication date: 01/06/2016
Manuscript P 11 published in Conference Proceedings ACTUATOR 2016
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