Side Drift of Aerosols in a Two-Dimensional Slowly Oscillating Sonic Field

Abstract

The two-dimensional drifting motion of aerosol particles in vessels under the influence of slow sonic oscillations is analyzed theoretically using the asymptotic small parameter method. The vessel geometry is such that the dimension in the direction of wave propagation does not exceed the sonic wavelength. It was recently shown that in the case of one-dimensional sonic waves, particles move away from the oscillating wall and drift toward the stationary one. The domain considered here is quite different from those previously treated in one-dimensional cases in the sense that the stationary wall of the vessel is slightly curved. It is shown that this curvature causes a drift of aerosol particles in the longitudinal direction, normal to the propagation of the applied sonic field.