Combustion of carbon particles initiated by laser radiation

Molecular heat exchange of a solid spherical particle with a gaseous medium

“…The temperature of the surface of solid aerosol par ticles heated by thermal sources of electromagnetic or chemical nature [1][2][3][4][5] can strongly exceed the tem perature of the carrier gaseous medium. Aerosol parti cles can experience such heating, e.g., in the zone of the passage of the laser radiation through aerosols under their brightening, diagnostics, and combustion [3][4][5].…”

“…Aerosol parti cles can experience such heating, e.g., in the zone of the passage of the laser radiation through aerosols under their brightening, diagnostics, and combustion [3][4][5].…”

“…In the majority of the aerodispersed systems encountered in practice, the average distance between the particles strongly exceeds their typical sizes, and the Reynolds and Peclet numbers of the particles are much less than unity [4][5][6][7]. In such systems, the tem perature dependent physical processes can be mathe matically simulated on the basis of knowledge of the regularities of the heat exchange of single motionless aerosol particles with an infinite medium [5,8].…”

“…The heat exchange and the temperature distribu tion in aerosol can be strongly affected by solid aerosol particles with the Knudsen number Kn ≤ 0.3 heated by thermal sources [1][2][3][4][5]. In the case of spherical parti cles [9][10][11][12], Kn = λ S /R where R is the radius of the particle and λ S is the average free path length of the gas molecules near the particle surface.…”