HEAT CONDUCTIVITY OF POLYATOMIC AND POLAR GASES,
Abstract
The formal kinetic theory of Wang Chang and Uhlenbeck (Univ. of Mich. Eng. Res. Rpt. no. CM-681, July 1951) and of Taxman (Phys. Rev. 110:1235, 1958) was used to derive explicit expressions for the heat conductivity of polyatomic and polar gases. By systematic inclusion of terms involving inelastic collisions the usual modified Eucken expression is derived as a first approximation, and as a second approximation an expression involving the relaxation times for various internal degrees of freedom (as well as the viscosity, diffusion coefficients, and heat capacity). For polar gases a second effect is often important since a resonant exchange of rotational energy is possible. The comparison of calculated and experimental results is generally satisfactory. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1961
- Accession Number
- AD0266551
Entities
People
- E. A. Mason
- L. Monchick
Organizations
- Johns Hopkins University Applied Physics Laboratory