Influence of sound directions on acoustic field characteristics within a rectangle-shaped sonoreactor: Numerical simulation and experimental study

•Influence of sound directions on the acoustic field with up to five directions was investigated.•Results of numerical simulation coincided well with that of aluminum foil erosion experiment.•Acoustic intensity, uniformity and cavitation characteristics were significantly influenced by the sound dir...

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Bibliographic Details
Published in:Ultrasonics sonochemistry 2018-04, Vol.42, p.787-794
Main Authors: Zhang, Zongbo, Gao, Tiantian, Liu, Xiaoyang, Li, Dawei, Zhao, Jiawei, Lei, Yuqi, Wang, Yankui
Format: Article
Language:English
Subjects:
Cavitation
Fluid-structure interaction (FSI)
High-intensity ultrasound
Sonoreactor
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Summary:•Influence of sound directions on the acoustic field with up to five directions was investigated.•Results of numerical simulation coincided well with that of aluminum foil erosion experiment.•Acoustic intensity, uniformity and cavitation characteristics were significantly influenced by the sound direction.•Several influence rules of sound directions were proposed.•Optimal acoustic field with high intensity and good uniformity was obtained. Acoustic field intensity and distribution are the most important factors for the efficiency of ultrasonic processing. Recent simulation studies suggested that sound direction could influence both acoustic field intensity and distribution, but this influence has scarcely been investigated experimentally so far. In this work, we systematically studied the influence of sound directions on the acoustic field with up to five directions via both simulation and experiment. Fluid-structure interaction (FSI) harmonic response simulation and aluminum foil erosion experiment were employed to study the acoustic field under different directional combinations of ultrasonic sources. Results of simulation coincided well with that of experiment, which indicated that acoustic intensity, uniformity and cavitation characteristics were significantly affected by sound directions. Based on the results, several influence rules of sound directions were proposed. Optimal acoustic field with sound intensity of 30 times higher than that of single-wall excitation and severe cavitation volume of 95% was obtained. This work provides useful guidelines for acoustic field design of high-intensity ultrasonic apparatus.
ISSN:1350-4177
1873-2828
DOI:10.1016/j.ultsonch.2017.12.024