Abstract
Heat flux through a rarefied gas confined between two coaxial cylinders is calculated on the basis of the kinetic equation. The external cylinder radius is assumed to be significantly larger than the internal one. To investigate the influence of the gas-surface interaction on the heat transfer the Cercignani-Lampis scattering kernel is applied at the internal cylinder. It is shown that the surface properties of the external cylinder weakly affect the heat transfer. Comparing the numerical results with experimental data the energy accommodation coefficient is extracted.
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