Investigation of Dynamic Viscosity of Several Aliphatic and Aromatic Hydrocarbons in Connection with Thermo-Occupancy Function |
| F. Sahin-Dinc
Karadeniz Technical University, Surmene Abdullah Kanca Vocational School, Machinery and Metal Technologies, Machinery Department, 61530, Camburnu, Surmene, Trabzon, Turkey |
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| In the current study, the Newtonian viscosity-hole fraction correlation has been extended to predict the dynamic viscosity η of pure aliphatic and aromatic hydrocarbon liquids for temperatures between 298.15 and 473.15 K and pressures up to 201.9 MPa. The correlation implicates the thermo-occupancy function Yh=Yh(h,T) in terms of T and the function of h=h(P,T) reckoned by the Simha-Somcynsky equation of state. The uncertainties for the measurements were estimated to be less than 0.16% regarding the specific volume. Dynamic viscosity prediction was performed in two approaches, one of which includes the additional hole fraction parameter h'. The fitting results of the equations with and without h' were in this report determined to be from 0.09 to 0.26% and 0.31 to 0.53%, respectively. It was found that both the volumetric and viscosity characterisation indices examined were related to the molecular conformation and architecture. |
DOI:10.12693/APhysPolA.141.535 topics: dynamic viscosity, hole fraction, Simha-Somcynsky (SS), aromatics |