Abstract
It has been experimentally established [1] that a spherical particle in a laminar flow of viscous fluid is subject to a lift force at right angles to the streamlines. Several attempts at a quantitative analysis of this effect have been made. For the case of rigid spheres of neutral buoyancy it has proved possible to construct a theory giving a good description of the corresponding experiments [2]. However, the question of the existence and magnitude of such effects in aerodisperse systems remains open [3]. The present paper describes a method for observing the behavior of isolated particles in a laminar gas flow. The experimental results on the migration of water drops of radius 10–20 μm in a descending flow in a planar slot are discussed from the point of view of modern theories of inertial effects.
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