Abstract
The present review is concerned with the motion of aerosol particles, including that under the exposure to external fields, with special focus being put on the problems related to the similarity theory and invariants that manifest themselves as symmetry in physics. Research on the mechanics of aerosols is extremely important for managing environmental practices. Ultrasonic and electrostatic effects are used in technological processes for cleaning industrial aerosol emissions. In addition, aerosol systems are commonly used to prevent emergency situations (fire extinguishing, fog deposition). Understanding these processes requires knowledge of aerosol mechanics. At the same time, fundamental laws of particulate matter behavior have not been established until now, especially in the presence of external fields. In this paper, we consider the main similarity criteria that are applied for aerosol description. The motion of aerosol particles in the gravitational, electric, and ultrasonic fields is described. The results from studies into acoustic and electrostatic aerosol coagulations are presented herein.
Highlights
There is no single aspect of human life or human activity that would not rely on aerosol systems
The present review aimed to report fundamental insights and current advances in the science of aerodispersed systems, as well as basic laws and mechanisms that govern the travel of the dispersed-phase particles in the dispersed medium, based on the literature overview
The major focus was on the similarity theory and invariants that are the manifestation of symmetry in aerosol mechanics
Summary
There is no single aspect of human life or human activity that would not rely on aerosol systems. Aerosol systems are commonly used to prevent emergency situations (high-performance powdered formulations for fire extinguishing [8]; aerosol-generating formulations to impact the clouds and fogs in order to prevent hail, and so on) Another aspect of the aerosol exposure of natural phenomena is that aerosol particles are instrumental in the transport of solar and heat radiation [9]. A great number of papers have dealt with experimental and theoretical research into two-phase media [14,15,16,17,18,19,20,21,22,23,24] They outline the fundamental bases of two-phase media dynamics and various aspects of particulate matter mechanics. The major focus was on the similarity theory and invariants (similarity criteria) that are the manifestation of symmetry in aerosol mechanics
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