Influence of the Drag Coefficient of Particles on their Distribution in a Two-Dimensional Acoustic Resonator
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A numerical study is made of the plane problem on the drift of a group of particles in the rectangular-resonator’s standing wave induced by harmonic oscillations of the left boundary at the first resonant frequency. The influence of the drag coefficient of particles on the dynamics and distribution of the particles in the resonator has been investigated. At certain drag coefficients, regions of acoustic capture of particles have been found. In these regions, the inherent particle drift is counterbalanced by the transfer by acoustic streaming. It has been shown that the particles share a common tendency to drift to resonator walls, where the gas velocity is minimum.
Keywordsacoustic streamings particle drift acoustic traps
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