Fluctuation solution theory of pure fluids

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dc.contributor.author Ploetz, Elizabeth A.
dc.contributor.author Pallewela, Gayani N.
dc.contributor.author Smith, Paul E.
dc.date.accessioned 2017-11-30T21:44:08Z
dc.date.available 2017-11-30T21:44:08Z
dc.identifier.uri http://hdl.handle.net/2097/38357
dc.description Citation: Ploetz, E. A., Pallewela, G. N., & Smith, P. E. (2017). Fluctuation solution theory of pure fluids. Journal of Chemical Physics, 146(9), 13. doi:10.1063/1.4977040
dc.description.abstract Fluctuation Solution Theory (FST) provides an alternative view of fluid thermodynamics in terms of pair fluctuations in the particle number and excess energy observed for an equivalent open system. Here we extend the FST approach to provide a series of triplet and quadruplet particle and excess energy fluctuations that can also be used to help understand the behavior of fluids. The fluctuations for the gas, liquid, and supercritical regions of three fluids (H2O, CO2, and SF6) are then determined from accurate equations of state. Many of the fluctuating quantities change sign on moving from the gas to liquid phase and, therefore, we argue that the fluctuations can be used to characterize gas and liquid behavior. Further analysis provides an approach to isolate contributions to the excess energy fluctuations arising from just the intermolecular interactions and also indicates that the triplet and quadruplet particle fluctuations are related to the pair particle fluctuations by a simple power law for large regions of the phase diagram away from the critical point. Published by AIP Publishing.
dc.relation.uri https://doi.org/10.1063/1.4977040
dc.rights This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
dc.rights.uri https://publishing.aip.org/authors/web-posting-guidelines
dc.subject Partial Molar Properties
dc.subject Thermodynamic Properties
dc.subject Computer
dc.subject Calculation
dc.subject Water
dc.subject Formulation
dc.title Fluctuation solution theory of pure fluids
dc.type Article
dc.date.published 2017
dc.citation.doi 10.1063/1.4977040
dc.citation.issn 0021-9606
dc.citation.issue 9
dc.citation.jtitle Journal of Chemical Physics
dc.citation.spage 13
dc.citation.volume 146
dc.description.embargo 2018-03
dc.contributor.authoreid pesmith
dc.contributor.kstate Smith, Paul E.


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