APPROXIMATE FORMULAE FOR CALCULATING THE MODULUS OF A NONSTATIONARY DIFFUSIOPHORESIS VELOCITY COMPONENT OF A SOLID SPHERICAL PARTICLE

Abstract

We continue to construct a theory of nonstationary diffusiophoresis of large solid non-volatile spherical particles in a viscous gas medium by the method of Laplace integral transforms. Approximate formulae are obtained for calculating the modulus of a nonstationary diffusiophoresis velocity component of a spherical particle in a particular case of diffusiophoresis. The nonstationary diffusiophoresis velocity component from its approximate formulae for long and short times is investigated. A conclusion is drawn that the nonstationary diffusiophoresis velocity component module depends on the properties of a particle substance and parameters of the gas mixture.