Kinetic Theory of Moderately Dense Gases

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Abstract
A kinetic theory of moderately dense gases is developed. The theory is based on a modified Boltzmann equation, which takes into account the ``collisional transfer'' of momentum and energy. The theory applies to pure gases made up of spherical molecules, and the effect of multiple collisions is neglected. The Boltzmann equation is solved by a perturbation method which is applicable near equilibrium. Expressions for the flux coefficients, i.e., the thermal conductivity, bulk, and shear viscosity are obtained from this solution and these are in turn evaluated for a rigid sphere potential.