Abstract
We numerically simulate the hydrodynamic interaction of aerosol particles due to the acoustic wake effect under the Oseen flow condition. Attraction is found for two nearby particles with an orientation angle of 0 to 50° with respect to the acoustic field, and weak repulsion is found outside this range. Good agreement is obtained between the numerical results and experiments in the literature. We study the influence of particle size, sound wave frequency and the particle separation. The result shows that the acoustic wake effect plays a significant role in acoustic agglomeration. It could be either the major agglomeration mechanism of monodisperse aerosols or the major refill mechanism for polydisperse aerosols to supplement orthokinetic interaction.
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De Sarabia E R F, Gallego-Juarez J A, Rodriguez-Corral G, et al. Application of high-power ultrasound to enhance fluid/solid particle separation processes. Ultrasonics, 2000, 38: 642–646
Sheng C D, Shen X L. Modelling of acoustic agglomeration processes using the direct simulation monte carlo method. J Aerosol Sci, 2006, 37: 16–36
Mednikov E P. Acoustic Coagulation and Precipitation of Aerosols. New York: Consultants Bureau, 1965
Cheng M T, Lee P S, Berner A, et al. Orthokinetic agglomeration in an intense acoustic field. J Coll Interf Sci, 1983, 91: 176–187
Hoffmann T L. An extended kernel for acoustic agglomeration simulation based on the acoustic wake effect. J Aerosol Sci, 1997, 28: 919–936
Dong S Z, Lipkens B, Cameron T M. The effects of orthokinetic collision, acoustic wake, and gravity on acoustic agglomeration of polydisperse aerosols. J Aerosol Sci, 2006, 37: 540–553
Riera E, Gallego-Juarez J A, Mason T J. Airborne ultrasound for the precipitation of smokes and powders and the destruction of foams. Ultrason Sonochem, 2006, 13: 107–116
Hoffmann T L, Koopmann G H. Visualization of acoustic particle interaction and agglomeration: Theory and experiments. J Acoust Soc, 1996, 99: 2130–2141
Gonzalez I, Gallego-Juarez J A, Riera E. The influence of entrainment on acoustically induced interactions between aerosol particles—An experimental study. J Aerosol Sci, 2003, 34: 1611–1631
Hoffmann T L. Environmental implications of acoustic aerosol agglomeration. Ultrasonics, 2000, 38: 353–357
Pshenai-Severin S. On the convergence of aerosol particles in a sound field under the action of the oseen hydrodynamic forces. Dokl Akad Nauk SSSR, 1959, 125: 775–778
Dianov D B, Podol’skii A A, Turubarov V I. Calculation of the hydrodynamic interaction of aerosol particles in a sound field under Oseen flow conditions. Soviet Phys Acoust, 1968, 13: 314–319
Tiwary R, Reethof G. Hydrodynamic interaction of spherical aerosol particles in a high intensity acoustic field. J Sound Vibrat, 1986, 108: 33–49
Gonzalez I, Hoffmann T L, Gallego-Juarez J A. Theory and calculation of sound induced particle interactions of viscous origin. Acustica, 2000, 86: 784–797
Hoffmann T L, Koopmann G H. Visualization of acoustic particle interaction and agglomeration: Theory evaluation. J Acoust Soc, 1997, 101: 3421–3429
Nair R. Effects of high intensity acoustic fields on sulfur dioxide capture and particle agglomeration in pulverized coal combustors. Ph. D. Thesis. Pennsylvania: Pennsylvania State University, 1996
Dianov D B, Podol’skii A A, Turubarov V I. Analysis of the hydrodynamic aggregation of aerosol particles in a sound field under stokes flow conditions. Soviet Phys Acoust, 1967, 13: 37–40
Shaw D T, Tu K W. Acoustic particle agglomeration due to hydrodynamic interaction between monodisperse aerosols. J Aerosol Sci, 1979, 10: 317–328
Liu J Z, Zhang G X, Zhou J H, et al. Experimental study of acoustic agglomeration of coal-fired fly ash particles at low frequencies. Powder Tech, 2009, 193: 20–25
Tiwary R, Reethof G. Numerical simulation of acoustic agglomeration and experimental verification. J Vibrat Acoust Stress Rel Design, 1987, 109: 185–191
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Zhang, G., Liu, J., Wang, J. et al. Numerical simulation of acoustic wake effect in acoustic agglomeration under Oseen flow condition. Chin. Sci. Bull. 57, 2404–2412 (2012). https://doi.org/10.1007/s11434-012-5212-1
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DOI: https://doi.org/10.1007/s11434-012-5212-1