A generalized viscosity correlation for undefined petroleum fractions

A single consistent correlation, based on Walther's equation, is described and used to estimate the kinematic viscosity-temperature behavior for undef ined petroleum fractions. The correlation requires a minimum of experimenta l information, with a minimum number of correlation constants. When a singl e viscosity measurement is used as an input, the described correlation is s hown to be more flexible and gives results comparable with those of previou sly published correlations. When the boiling point and the specific gravity are available as input, the correlation is shown to give better results th an other published correlations. (C) 1999 Elsevier Science S.A. All rights reserved.