Abstract
Analytical investigations are considered for the related problems of thermophoresis, photophoresis and thermophoresis with chemical reactions of a spherical aerosol particle embedded in a gaseous micropolar medium. The Knudsen number is assumed to be in the slip-flow regime. Viscous and gyrational dissipations are ignored in the energy equation. At the surface of the particle, a thermal stress slip and the creep slip are considered in the analysis of motion. Expressions for thermophoretic and photophoretic velocities and forces are obtained as functions of the micropolarity parameter characterizing the micropolar medium and the thermal properties of the medium and particle. Results of the effect of the chemical reaction within the particle on its thermophoresis velocity are presented for various distributions of the composition-dependent factor or heat generation parameter of the chemical reaction as well as the relative thermal and surface properties of the aerosol spherical particle. The corresponding limiting cases of the classical viscous fluids are obtained.
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