- #1

- 201

- 10

The source is an MASc thesis. The formula is given as:

[tex]

k_{gas} = \frac{\sum _i y_{i}\sqrt[3]{M_{i}}k_{0,i}T^{s_{i}}}{\sum _i y_i\sqrt[3]{M_i}}

\left( 1 + \left(0.51 T_R ^{-2.26} \right) P_R ^{1+2.5 T_R ^{-6.2}} \right)

[/tex]

The first part is a mixing term, the second is pressure dependence. I believe it may be a crude semi-empirical relationship (possibly for monatomic gases)