The thermophoresis of large and moderately large two-layered cy-lindrical particles with a constant coefficient of thermal conductivi-ty of core and variable coefficient of thermal conductivity of the shell

Author(s):  A.B. Poddoskin, Dr., Prof., Moscow State Technical University, Moscow, Russia, apoddoskin@yandex.ru

N.V. Malay, Dr., Prof., Belgorod National Research University, Belgorod, Russia, malay@bsu.edu.ru

E.R. Shchukin, Dr., Prof., Joint Institute for High temperatures of Russian Academy of Sciences , Moscow, Russia, evgrom@yandex.ru

Issue:  Volume 50, № 2

Rubric:  Physics

Annotation:  In article obtain the expression for the velocity of thermophoresis of a moderately large solid two-layer long cylindrical aerosol particle, allowing to estimate the value given in the boundary conditions, all sur-face gas-kinetic effects linear in the Knudsen number, a constant coefficient of thermal conductivity of kernels and depend on the radial coordinate variable coefficient of thermal conductivity of the shell. The particle under consideration is perpendicular to the gas temperature gradient. The carried out analysis showed, in particular, that an increase in the value of the thermal conductivity of the core and the average value of the variable coefficient of thermal conductivity of the shell lead to a decrease in the thermo-phoresis velocity, and their decrease to its increase

Keywords:  thermophoresis, cylindrical two-layer aerosol particles, moderately large particles.

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