Kinetic Theory of the Moderately Dense Rigid-Sphere Fluid. IV. Fluxes of Matter, Momentum, and Energy in a Mixture

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Abstract
The perturbation solution of the modified Boltzmann equation is used to obtain the fluxes of matter, momentum, and energy. The fluxes are evaluated to first order in the gradients of density, flow velocity, and temperature, and are left in terms of the Sonine polynomial expansion coefficients. As an example, the calculation of the isothermal diffusion coefficient is carried out for the general case of unequal masses and radii. In the limit of identical particles, D is proportional to (2kT/m)12(N/vσ2) {[1/g(σ)]+(const/v)+···} .