Experiments And Numerical Simulation Of The PM2.5 Particle Coagulation In Acoustic Field

The visual experimental device of the dynamics characteristic is set up in the inhalale particles PM2.5 acoustic field of studying, regard flying dust of power station as the research object. The movement orbit has been studied visually in the same sound intensity, different frequency sound and the same frequency, different sound intensity. Then, A model that describing the movement of PM2.5 driven by level sound wave in gravitational field was suggested, and for the first time the resistance to PM2.5 brought by air was considered in this model. From the model some conclusions were drawn: the different initial positions would lead to different speed and orientation to PM2.5; intensity and the frequency of sound field are important factors that affect the movement of particles; the combination of level displacement and vertical displacement would result in the movement of PM2.5 is spiral, and this space is the effective space for collision.