Sedimentation of Superfine Aerosol by Means of Ultrasound
- 1 Institute for Problems of Chemical & Energetic Technologies of the Siberian Branch of Russian Academy of Sciences, Biysk, Russia
- 2 Institute for Problems of Chemical & Energetic Technologies of the Siberian Branch of Russian Academy of Sciences, Biysk, Russia
- 3 Institute for Problems of Chemical & Energetic Technologies of the Siberian Branch of Russian Academy of Sciences, Biysk, Russia
Abstract
The article is devoted to a problem of sedimentation of superfine aerosols with a characteristic size of particles, an order of values of micrometers. Acceleration of the sedimentation process is promoted by imposing of an acoustic field that leads to acceleration of coagulation of particles. Besides, pressure of the sound radiation directed down, accelerates gravitational sedimentation of an aerosol. The mathematical model is based on the Smolukhovsky’s equation, describ ing dynamics of change of distribution function by the sizes of aerosols particles taking into account ultrasonic influ ence, evaporation (for liquid aerosols) and sedimentation. Influence of introduction of an additional phase on coagula tion and sedimentation speed is investigated. Results of a theoretical and experimental study of dispersion parameters and the sedimentation speed of superfine aerosols are presented.
- H. S. Patterson, W. Cawood, “Phenomena in a Sounding Tube,” Nature, Vol. 127, No. 3209, 1931, p. 667.
- H. St. Clair, “Agglomeration of Smoke, Fog or Dust Particles by Sonic Waves,” Industrial & Engineering Chemistry Research, Vol. 41, No. 11, 1949, p. 2434. doi:10.1021/ie50479a022
- B. Maczewski-Rowinski, “Precipitation of Dust From Industial WasteGases by Means of the C.I.W.P. Siren,” Proceedings of the II Conference on Ultrasonics, PWN, Warsawa, 1957, pp. 23-29.
- V. N. Khmelev, A. V. Shalunov and K. V. Shalunova, “The Acoustical Coagulation of Aerosols,” Proceedings International Workshop and Tutorial on Electron Devices and Materials, Novosibirsk, 1-5 July 2008, pp. 289-294.
- A. A. Antonnikova, O. B. Kudryashova, K. V. Shalunova, “Application of Ultrasound to Settle submicron Aerosols,” Proceeding International Conference and Seminar on Micro/Nanotechnologies and Electronic Devices EDM, Biysk, 2012, pp. 87-89.
- A. A. Antonnikova, N. V. Korovina, O. B. Kudryashova and I. R. Akhmadeev, “Experimental Study of the Processes of Aerosol Transformation under Ultrasonic Impact,” Atmospheric and Oceanic Optics, Vol. 26, No. 1, 2013, pp. 57-59. doi:10.1134/S102485601301003X
- C. W. Oseen, “The Theory of Liquid Crystals,” Transactions of the Faraday Society, Vol. 29, No. 140, 1933, pp. 883-889. doi:10.1039/tf9332900883
- P. I. Westervelt, “Acoustic Radiation Pressure,” JASA, Vol. 29, No. 1, 1957, p. 26.
- J. W. Strutt Baron Rayleigh, “The Theory of Sound,” Macmillan and Company, New, York, 1894.
- O. Kudryashova, A. Pavlenko, B. Vorozhtsov, S.Titov, V. Arkhipov, S. Bondarchuk, E. Maksimenko, I. Akhmadeev and E. Muravlev, “Remote Optical Diagnostics of Nonstationary Aerosol Media in a Wide Range of Particle sizes,” In: Photodetectors, InTech, Rijeka, 2012, pp. 341- 364. http://www.intechopen.com/books/photodetectors/remote-optical-diagnostics-of-nonstasionary-aerosol-media-in-a-wide-range-of-particle-sizes