Vol. 33, issue 06, article # 10

Malai N. V., Shchukin E. R., Shulimanova Z. L. Photo-thermo- and diffusiophoresis of heated large non-volatile spherical aerosol particles in a binary gas mixture. // Optika Atmosfery i Okeana. 2020. V. 33. No. 06. P. 476–482. DOI: 10.15372/AOO20200610 [in Russian].
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Abstract:

Stationary motion of a large non-volatile spherical aerosol particle, inside which heat sources operate, under the effect of the gradients of temperature and binary gas mixture component concentrations in the external field is described in the Stokes approximation. The average surface temperature of the particle is assumed to significantly differ from the temperature of the surrounding binary gas mixture. The gas dynamics equations are solved with power temperature dependences of the coefficients of viscosity, thermal conductivity, diffusion, and density of the gaseous medium. Diffusive and thermal sliding motions are taken into account in the boundary conditions. Numerical estimates have shown that the photo-thermal and diffusiophoretic force and velocity significantly depend on the average temperature of the particle surface.

Keywords:

photo- and thermophoresis, diffusiophoresis, heated large non-volatile spherical particles, binary gas mixture

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