Well, I think the most important parameter which can connect between the drop size distribution, the concentration, and all the other physical properties is the Sauter mean drop diameter.
The dimensionless group model for centrifugal separation which applies differences in densities, viscosity of the three components (oil, gas, water cut) and the characteristic liquid velocity inside the separation equipment (hydro cyclone). A correlation has been developed. Check for the book, 'Chemical engineering unit operations, synthesis and basic design calculations'
Hi do you know any research paper on phase separation of 2 liquid + 1 high viscosity polymer fluid? I am very very interest in this problem because it seems happens in my experiment