Original title: Density gradient theory combined with the PC-SAFT equation of state used for modeling the surface tension of associating systems
Authors: Vinš, Václav ; Planková, Barbora ; Hrubý, Jan ; Celný, D.
Document type: Papers
Conference/Event: Experimental Fluid Mechanics 2013, Kutná hora (CZ), 2013-11-19 / 2013-11-22
Year: 2013
Language: eng
Abstract: The density gradient theory (GT) combined with a SAFT-type (Statistical Associating Fluid Theory) equation of state has been used for modeling the surface tension of associating fluids represented by a series of six alkanols ranging from methanol to 1-pentanol. The effect of nonzero dipole moment of the selected alkanols on the predicted surface tension was investigated in this study. Results of the GT + non-polar Perturbed Chain (PC) SAFT equation of state were compared to predictions of GT combined with the PC-polar-SAFT, i.e. PCP-SAFT, equation. Both GT + PC-SAFT and GT + PCP-SAFT give reasonable prediction of the surface tension for pure alkanols. Results of both models are comparable as no significant difference in the modeled saturation properties and in the predicted surface tension using GT was found. Consideration of dipolar molecules of selected alkanols using PCP-SAFT had only minor effect on the predicted properties compared to the non-polar PC-SAFT model.
Keywords: association; gradient theory; surface tension
Project no.: GPP101/11/P046 (CEP), IAA200760905 (CEP), M100761201
Funding provider: GA ČR, GA AV ČR, Rada Programu interní podpory projektů mezinárodní spolupráce AV ČR
Host item entry: Experimental Fluid Mechanics 2013, ISBN 978-80-260-5375-0

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0228815

Permalink: http://www.nusl.cz/ntk/nusl-170055


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Research > Institutes ASCR > Institute of Thermomechanics
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