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Interrelationships between P ‐ V ‐ T and flow behavior of linear and nonlinear hydrocarbons
Author(s) -
Yahsi Ugur
Publication year - 1998
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.10208
Subject(s) - nonlinear system , materials science , flow (mathematics) , thermodynamics , mechanics , physics , quantum mechanics
The aim of this work is to determine the branching effect on the flow behavior of alkanes. For this purpose, the zero‐shear viscosity, η 0 , was analyzed in terms of the Simha‐Somcynsky equation of state, SS‐EOS, using the hole fraction, h = h ( P , T ) computed from it. For the analysis, η 0 ‐data of the linear and three‐branch alkanes measured in a wide range of temperature and pressure, were used. For the linear species, Utracki proposed a relation, viz. ln η 0 = a 0 + a 1 /( h + a 2 ), where a 1 = 0.79 and a 2 = 0.07 are the universal parameters for linear hydrocarbons and their mixtures. In this work, this relation was found to be valid for the linear but not for the branched alkanes.