{\nu}_{12} = \exp \left[ \, \exp \left(\frac{A_{12}-10.975}{14.534} \right) - 0.8 \, \right]
A_{12} = y_1 \, A_1 + y_2 \, A_2
A_i = 14.534 \, \ln \left[ \,
\ln \left( \nu_i + 0.8
\right) \,
\right] + 10.975, \ \ i = \{ 1,2\}


where

kinematic viscosity of fluid mixture 

kinematic viscosity of the 1st fluid component

kinematic viscosity of the 2nd fluid component



weight fraction of the 1st fluid component

weight fraction of the 2nd fluid component


See also

Physics / Fluid Dynamics / Fluid Mixing Rules / Mixing Rules for Viscosity


References

ASTM D7152, Standard Practice for Calculating Viscosity of a Blend of Petroleum Products. ASTM Book of Standards, vol. 05.04.