New relation between viscosity and surface tension for pure hydrocarbon liquids

ABSTRACT

A new relation between viscosity and surface tension is proposed and checked for 21 pure hydrocarbon liquids, and validated with the National Institute of Science and Technology data. The performance and accuracy of the proposed relation are compared with the reported empirical correlations in the form of absolute average deviation. The proposed relation remains valid for higher hydrocarbons (up to C₂₅H₅₂). A total of 418 data points for 21 pure hydrocarbon liquids were taken into consideration for checking the accuracy of the proposed relation. The proposed relation gives an absolute average deviation of 5.66%, indicating high accuracy of the proposed relation.

KEYWORDS:

• Hydrocarbon liquids
• surface tension
• thermodynamic properties
• viscosity

Funding

Universiti Teknologi PETRONAS is gratefully acknowledged for the financial support and encouragement for carrying out this work.