Calculations of the Coefficient of Viscosity and the Coefficients of Diffusion for Dissociating Hydrogen

Abstract

The kinetic theory of dilute monatomic gases and mixtures has been used to calculate some transport properties of dissociated hydrogen. The H2–H2 and H–H2 interactions have been assumed to obey the modified Buckingham (exp-6) potential and the Lennard-Jones (12–6) potential, respectively, and the two H–H interaction potentials (1Σg and 3Σu) have been treated by the method of Hirschfelder and Eliason to obtain a weighted average rigid-sphere collision diameter. The coefficient of viscosity, the coefficient of diffusion in a binary mixture of the H–H2 system, and the coefficients of self-diffusion for H atoms and H2 molecules have been computed for temperatures from 1500° to 5000°K and pressures of 0.1, 0.5, 1, 2, 10, 50 and 100 atm.