Wilke mixing rule

For the calculation of the dynamic viscosity of gaseous mixtures the Wilke mixing rule [78] can be applied ... 

This mixing rule is used to determine the diffiisivity of any component in a / -I-1 component mixture and requires binary diffiisivities of component i with all other components. It has been estimated that errors are about 5 percent greater than the greatest error in the binary diffiisivities. Fairbanks and Wilke, using the same Eq. (2-154), made the same recommendation with essentially the... 

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