Diffusiophoresis and Photophoresis of Heated Large Nonvolatile Aerosol Spherical Particles
| Autor: | D. N. Efimtseva, N. V. Malai, E. R. Shchukin, Z. L. Shulimanova |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Mechanical Engineering Diffusion 02 engineering and technology Mechanics Condensed Matter Physics Photophoresis 01 natural sciences 010305 fluids & plasmas Aerosol Viscosity 020303 mechanical engineering & transports Thermal conductivity 0203 mechanical engineering Mechanics of Materials Diffusiophoresis 0103 physical sciences Thermal Particle |
| Zdroj: | Journal of Applied Mechanics and Technical Physics. 61:426-435 |
| ISSN: | 1573-8620 0021-8944 |
| DOI: | 10.1134/s0021894420030141 |
| Popis: | This paper describes a theoretical study of the steady motion of a large solid nonvolatile aerosol spherical particle, which contains thermal sources within itself, in a concentration gradient of binary gas mixture components. It is assumed that an average particle surface temperature significantly differs from the temperature of the binary gas mixture surrounding it. Equations of gas dynamics are solved taking into account the power-law dependence of the molecular transfer coefficients (viscosity, thermal conductivity, and diffusion) and the density of the gaseous medium on temperature. Under boundary conditions, diffusion and thermal slip are taken into account. Numerical estimates show that the diffusion and photophoretic forces and velocity substantially depend on the average particle surface temperature. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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