Transport coefficients of dilute hydrogen gas, calculations and comparisons with experiments

Results are presented for the pure para- and ortho-H2 gas as well as for their mixtures. Excellent agreement has been found in comparisons with measured results of pure para-H2 gas thus providing proof of the proper input used in the calculations. The comparison with measured normal H2 transport coefficients was also successful for the calculated normal H2 shear viscosity (±2%) and the calculated translational heat conductivity coefficient (±2%). Deviations from experiments of up to ≈10% have been found for the total normal H2 heat conductivity in the temperature range between 75 and 225 K.