Heat transfer from a spherical particle in a rarefied monatomic gas

The problem of heat transfer from a spherical particle situated in an infinite expanse of a monatomic gas is considered. The Bhatnagar, Gross, and Krook (BGK) model of the linearized Boltzmann equation is used. The boundary-value problem is converted to a system of linear integral equations, which is solved numerically. Results for radial heat flux, gaseous density, and temperature for all degrees of rarefaction, and arbitrary thermal accommodation coefficient, are obtained. (Author)