SIDE DRIFT OF AEROSOLS IN A 2-DIMENSIONAL SLOWLY OSCILLATING SONIC FIELD

The two-dimensional drifting motion of aerosol particles in vessels un der the influence of slow sonic oscillations is analyzed theoretically using the asymptotic small parameter method. The vessel geometry is s uch that the dimension in the direction of wave propagation does not e xceed 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 i s quite different from those previously treated in one-dimensional cas es in the sense that the stationary wall of the vessel is slightly cur ved. It is shown that this curvature causes a drift of aerosol particl es in the longitudinal direction, normal to the propagation of the app lied sonic field.