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《Journal of Applied Acoustics》 2019-06
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Numerical investigation on acoustic scattering property and attenuation spectrum of air bubbles with viscosity

DU Na;SU Mingxu;School of Energy and Power Engineering, University of Shanghai for Science and Technology;  
By investigating the scattering model of bubble incorporating the effect of viscosity, the scattering characteristic of a single bubble in water is analyzed numerically. And, the sound attenuation by multiple bubbles is predicted combining the law of Beer-Lambert, which depicts that with the harmonic number increasing, the distribution of scattering intensity stabilizes, and the forward scattering by a single bubble enhances correspondingly. The non-dimensional parameter ka(=0.1) is an important indicator for distinguishing the scattering and absorption, and the latter plays a dominate role in the resonance area. In addition, the attenuation of sound by multiple bubbles in water is consistent with the result of the classical ECAH model when ka is above 0.1, which yields a variation trend proportional to the changes of concentration, and the attenuation spectrum tends to broaden with the increase of shear viscosity at low concentration. The numerical characteristics of acoustic attenuation predicted by this model with particle size, frequency and concentration can provide theoretical basis for the measurement and characterization of particle size and concentration in the two-phase system.
【Fund】: 国家自然科学基金项目(51776129)
【CateGory Index】: O422.5;O359
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【Citations】
Chinese Journal Full-text Database 1 Hits
1 SU Mingxu CAI Xiaoshu XU Feng ZHANG Jinlei ZHAO Zhijun (Institute of Particle & Two Phase Flow Measurement Technology, University of Shanghai for Science and;The measurement of particle size and concentration in suspensions by untrasonic attenuation[J];声学学报;2004-05
【Co-citations】
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1 YUAN An-li;SU Ming-xu;LI Yong-ming;CAI Xiao-shu;Shanghai City Key Laboratory on the Multi-phase Flow and Heat Transfer in Power Engineering,Particle and Two-phase Flow Measurement Research Institute,Shanghai University of Science and Technology;;Experimental Study of the Measurement of Particle Diameters and Concentration of Steam Droplets[J];热能动力工程;2015-05
2 ;Research and Practice on Ultrasonic Densitometer in Iron Ore Plant[J];自动化仪表;2015-07
3 LIU Xiaorong;HE Xiping;CUI Dong;HE Shengping;NI Tao;CHEN Rensong;School of Physics and Information Technology,Shaanxi Normal University,Shaanxi Key Laboratory of Ultrasonic;;Measurement of acoustic attenuation coefficient of material with the stepped sample[J];陕西师范大学学报(自然科学版);2015-02
4 HUANG Chunyan,CAI Xiaoshu,SU Mingxu(School of Energy and Power Engineering,University of Shanghai for Science & Technology,Shanghai 200093,China);Acoustic emission for particle size distribution measurement based on Hertz-Zener theory[J];化工学报;2013-04
5 YANG Bin,GAO Kai,DAN Yong,HAO Huidi(School of Chemical Engineering,Northwest University,Xi'an 710069,Shaanxi,China);Development of the flow measurement techniques used in the experimental study of the chemical stirred tank[J];化工进展;2012-11
6 Xuejin Dong, Mingxu Su , Xiaoshu Cai Institute of Particle and Two-Phase Flow Measurement, University of Shanghai for Science and Technology, Shanghai 200093, China;Resonance scattering characteristics of double-layer spherical particles[J];Particuology;2012-01
7 YANG Xuan,SU Mingxu,CAI Xiaoshu,WU Jian(University of Shanghai for Science and Technology,Shanghai 200093,China);Measurement of the Density of the Ethanol Solutions Using Multiple Reflections of Ultrasonic Waves[J];传感技术学报;2011-07
8 ZHAI Wei,HONG ZhenYu,XIE WenJun & WEI BingBo* Department of Applied Physics,Northwestern Polytechnical University,Xi'an 710072,China;Dynamic solidification of Sn-38.1% Pb eutectic alloy within ultrasonic field[J];Chinese Science Bulletin;2011-01
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10 Su Mingxu,Xue Minghua,Cai Xiaoshu(Institute for Particle and Two-phase Fluid Measurement,University of Shanghai for Science and Technology,Shanghai 200093,China);Particle Size Distribution Characterization of Manganese Mineral Slurry by Ultrasonic Method[J];中国粉体技术;2010-04
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