Numerical simulation on ultrasonic cavitation due to superposition of acoustic waves

被引：0
|
作者：
Lee J.H. [1 ]
Tey W.Y. [1 ,2 ]
Lee K.M. [3 ]
Kang H.-S. [4 ]
Lee K.Q. [2 ]
机构：
[1] Department of Mechanical Engineering, Faculty of Engineering, UCSI University, Kuala Lumpur
[2] Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Kuala Lumpur
[3] Department of Chemical and Petroleum Engineering, Faculty of Engineering, UCSI University, Kuala Lumpur
[4] Marine Technology Centre (MTC), Faculty of Engineering, University Teknologi Malaysia, Skudai
来源：
Materials Science for Energy Technologies | 2020年 / 3卷
关键词：
Adaptive time marching method; Rayleigh-Plesset equation; Superposed ultrasonic irradiation; Ultrasonic cavitation; Ultrasonic pretreatment;
D O I：
10.1016/j.mset.2020.06.004
中图分类号：
学科分类号：
摘要：
Ultrasonic pretreatment has been widely used for biomass processing and sludge degradation. However, most of the researches made previously are confined to the acoustic cavitation irradiated by single transducer. When two transducers are introduced, interference of acoustic wave would transpire. Up to date, the effect of ultrasonic interference on cavitation is remained unknown. Therefore, the paper aims to develop a solver for preliminary investigation of the effect of superposition of acoustic wave on the performance of ultrasonic pretreatment. The simulation involves coupling between wave equation and Rayleigh-Plesset equation (RPE). Finite difference Euler explicit method is integrated with modified adaptive time marching method for computation of time-step sensitive RPE. Simulation results show a parabolic increment for relationship between frequency and enhancement of ultrasonic pretreatment for superposed irradiation, and the optimised frequency observed is at 900–1000 kHz. © 2020
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收藏
页码：593 / 600
页数：7
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