Powder Technology, Vol.364, 738-745, 2020
Aerosol aggregation through modulated symmetrically opposing acoustic field in normal 16-sided waveguide coupled with resonators
Aerosol control is a big revolution in production and use of submicronic particles. Developing a novel aerosol control technology in the area is the study objective of this paper. Attributing to the aerosol control potential in acoustics, a normal 16-sided aerosol aggregation chamber (pelletier dish) symmetrically installed with 16 poles of Helmholtz sound source (HSS) is successfully used to aggregate smog aerosols. The aerosols are generated by the combustion of chemical material. In the acoustic conditions of 2, 4, 8 and 16 beams of opposing waves, the shapes of aerosol distribution always display as the specific aerosol petals of number equaling to the operating number of HSS. With the increase of the operating number, the removal effectiveness rises gradually to 1.5 wavelengths, obviously larger than half wavelengths achieved in the previous study. The results are repeatability in experiment, and especially the aerosol aggregation can be pre-designed by acoustic field simulation. (C) 2020 Elsevier B.V. All rights reserved.