3 replies to this topic

[allison]

Hi!

Does anyone know a good way to estimate the viscosity of a mixture? I did a little research online and some papers mentioned the Grunberg Equation, but I couldn't find the actual equation.


Thanks

[JoeWong]

You have to understand how the mixtures is formed, flow nature before it is mixed...

See if this link can helps...Viscosity

[ankur2061]

Allison,

If you had made an effort to use the search feature on the forum you would have found plenty of references. Here is one from the forum itself:

http://www.cheresour...ure viscosities

Regards,
Ankur.

[Zauberberg]

It depends on what do you need these viscosities for; sometimes, the weighted or volumetric average value is accurate enough.
For hydrocarbon mixtures, very good reference is "Petroleum refinery engineering" by W. Nelson.

UniSim software offers an interesting and quite accurate procedure for calculating viscosity of heavy crude/condensate blends (Shu's correlation). You will need specific gravity of each fraction contained in the mixture. The document is attached below.

 Viscosity_of_Heavy_Oil_and_Condensate_Blends.pdf   131.62KB   43 downloads