THE PREDICTION OF THE VISCOSITY OF LIQUID HYDROCARBONS AND THEIR MIXTURES AS A FUNCTION OF TEMPERATURE AND PRESSURE

We present empirical models for calculating the viscosity of hydrocarb ons and their mixtures, including with carbon dioxide, over a wide ran ge of temperatures and pressures. The procedure is simple, will always yield a reasonable answer, and is surprisingly accurate for the fluid s and conditions we have examined. Indeed, our model is more accurate than other models currently in use, including the much more complicate d corresponding states methods. Further, in many cases, the model is c ompletely predictive, requiring only the normal boiling point as input data. The predictive ability of the model is also tested with several petroleum mixtures.