Numerical Simulation of Particle Aggregation in the Poiseuille and Acoustic Flow Field

Abstract

Based on the movement model of the particle in the acoustic standing wave and liquid field that has been established in the previous study, this paper will discuss a new condition that acoustic field with two-dimensional Poiseuille flow. To facilitate further study, we will give the key concepts of Condensation Point, Congregation Area, Congregation Time, and Congregation Length first, then, undertake the numerical simulation of particles aggregation in the Poiseuille and acoustic flow field, and get the result of the aggregation condition of the particles. The research results show that particles have the same velocities in x direction as the flow, and in y direction, motions are same as the static fluid condition; particles the farther away from the node of acoustic standing wave, the greater of the magnitude of Congregation Time and Congregation Length. The research results have valuable significance for the further understanding of acoustic aggregation mechanism and are practical for the design of inhalable particle congregation device.