Mechanisms of Aerosol Sedimentation by Acoustic Field

Open access

Abstract

Acoustic radiation sources are successfully applied to cleaning rooms from dust of fairly large particle sizes (ten micrometers and larger). The sedimentation of fine aerosols (particle diameter of 1-10 microns) is a more complicated challenge. The paper is devoted to the substantiation of the acoustic sedimentation method for such aerosols. On the basis of the mathematical model analysis for aerosol sedimentation by the acoustic field the mechanisms of this process have been determined and include the particle coagulation acceleration and radiation pressure effect. The experimental results of the acoustic sedimentation of a model aerosol (NaCl) are shown. The calculation results according to the mathematical model for coagulation and sedimentation, on the basis of the Smolukhovsky’s equation taking into account various mechanisms of aerosol sedimentation by sound depending on the particle sizes and sound intensity, are given. The necessity to use intensive sources of high-frequency sound has been confirmed, suggesting that these sources must be located above dust clouds.

1. Antonnikova A.A., Korovina N.V., Kudryashova O.B., Akhmadeev I.R. (2013), Experimental Study of the Processes of Aerosol Transformation under Ultrasonic Impact, Atmospheric and Oceanic Optics, 1, 57-59.

2. Antonnikova A.A., Kudryashova O.B., Shalunova K.V. (2012), Application of Ultrasound to Settle submicron Aerosols, Proceedings of International Conference EDM 2012, pp. 87-89, Biysk, Russia.

3. Czyz H. (1997), On the relation between the inertial coagulation and the amplitudial effect, Archives of Acoustics, 22, 4, 437-444.

4. Korovina N.V., Antonnikova A.A., Kudryashova O.B. (2013), Sedimentation of Superfine Aerosol by Means of Ultrasound, Open Journal of Acoustics, 3A, 16-20.

5. Kudryashova O., Pavlenko A., Vorozhtsov B., Titov S., Arkhipov V., Bondarchuk S., Maksimenko E., Akhmadeev I., Muravlev E. (2012), Remote optical diagnostics of nonstationary aerosol media in a wide range of particle sizes, [in:] Photodetectors, pp. 341-364, InTech, Rijeka, Croatia.

6. Mednikov E. (1966), Acoustic coagulation and precipitation of aerosols, Consultants Bureau, New York.

7. Smoluchowski M. (1916), Three reports on diffusion, Brownian molecular movement and ńoagulation of colloid particles [in German], Physik. Z., 17, 557-571, 585-599.

8. Wyrzykowski R. (1969), A theory of acoustic coagulation [in Polish], University of Rzeszow, 1, 125-135.

9. Wyrzykowski R. (1956), Sonic agglomeration of aerosols, Proceedings of II Conference on Ultrasonic, PWN, Warszawa, 103-109.

Archives of Acoustics

The Journal of Institute of Fundamental Technological of Polish Academy of Sciences

Journal Information


IMPACT FACTOR 2016: 0.816
5-year IMPACT FACTOR: 0.835

CiteScore 2016: 1.15

SCImago Journal Rank (SJR) 2016: 0.432
Source Normalized Impact per Paper (SNIP) 2016: 0.948

Metrics

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 74 74 10
PDF Downloads 38 38 10