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http://dx.doi.org/10.7776/ASK.2020.39.5.400

Analysis of flow speed distribution in the acoustic streaming generated by two piston sources  

Kim, Jungsoon (Department of Electrical Engineering, Tongmyong University)
Jung, Jihee (General Utility Co. Ltd.)
Kim, Moojoon (Department of Physics, Pukyong National University)
Publication Information
The Journal of the Acoustical Society of Korea / v.39, no.5, 2020 , pp. 400-405 More about this Journal
Abstract
To analyze the flow distribution formed by multiple acoustic sources, the distribution of acoustic streaming speed caused by an ultrasonic transducer composed of two identical piezoelectric vibrators was examined for various angles between the sound sources. In order to measure the distribution of the speed along the acoustic axis of the transducer, a simple measurement method using a droplet indicator having density similar to that of water is suggested. The simulation results calculated by a numerical method and experimental results showed a similar tendency, and the change of flow speed distribution with the intersection angle between acoustic beams radiated from two acoustic sources was analyzed.
Keywords
Acoustic streaming; Ultrasonic transducer; Multiple acoustic sources; Flow speed distribution; Electroacoustic conversion efficiency;
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