\ln {\mu}_{12} = x_1 \cdot \ln {\mu}_1 + x_2 \cdot \ln {\mu}_2 |
where
dynamic viscosity of fluid mixture | dynamic viscosity of the 1st fluid component | dynamic viscosity of the 2nd fluid component | |||
mole fraction of the 1st fluid component | mole fraction of the 2nd fluid component |
The most straightforward generalization is provided by Lederer-Roegiers equation.
Physics / Fluid Dynamics / Fluid Mixing Rules / Mixing Rules for Viscosity