Ultrasonic agglomeration of micron aerosols under standing wave conditions

• Published in: Journal of sound and vibration Vol. 110; no. 3; pp. 413 - 427
• Main Authors: Riera-Franco de Sarabia, E., Gallego-Juárez, J.A.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 08.11.1986
• ISSN: 0022-460X; 1095-8568
• DOI: 10.1016/S0022-460X(86)80144-4

This paper deals with a study of the dynamic growth of micron and submicron aerosol particles under the action of an ultrasonic high intensity standing wave field. The study has basically consisted of a very wide set of measurements and an analysis of the data obtained. The experiments were carried out with carbon black smoke aerosol under static flow conditions. The ranges of variation of the main physical parameters were as follows: ultrasonic field intensity, I=0·44 to 2·14 W/cm2; irradiation times, t=0 to 5 s; initial particle mean radius, R0=0·10 to 0·57 μm; geometric standard deviation, σg=1·34 to 1·97; aerosol mass concentration, C=3 to 12 g/m3. In all cases the frequency was 20·4 kHz. By processing the experimental data, some correlations were found and the relative influence of ultrasonic field and aerosol parameters was determined. In addition, the mathematical expression established provides a basis for analysis and hence control of the coagulation process and for its possible extension for industrial applications.