Modeling of phase transition of partially miscible solvent systems: Hydrodynamics and heat transfer phenomena

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Abstract

A numerical model is developed to simulate the phase separation of binary Upper CST mixtures confined between two opposite cooled walls. The modeling is attempted to simulate the heat transfer enhancement obtained experimentally during phase separation of partially miscible solvent mixtures. With a critical composition, the initial homogeneous mixture undergoes spinodal decomposition, when the walls are cooled below the critical temperature. A new formulation is suggested for the typical length scale (a) of the spatial inhomogeneity that is included in the generalized free energy coarse-grained Landau-Ginzburg functional. The new formulation is based on physical considerations and accounts for the temperature variation of this length scale. A careful modeling of this temperature dependency is shown to be important for simulating the phenomena during spinodal decomposition under non-isothermal conditions.

Original languageEnglish
Title of host publicationProceedings of CHT-15
Subtitle of host publication6th International Symposium on Advances in Computational Heat Transfer, 2015
PublisherBegell House Inc.
Pages1166-1173
Number of pages8
ISBN (Print)9781567004298
DOIs
StatePublished - 2015
Event6th International Symposium on Advances in Computational Heat Transfer , CHT 2015 - New Brunswick, United States
Duration: 25 May 201529 May 2015

Publication series

NameInternational Symposium on Advances in Computational Heat Transfer
ISSN (Print)2578-5486

Conference

Conference6th International Symposium on Advances in Computational Heat Transfer , CHT 2015
Country/TerritoryUnited States
CityNew Brunswick
Period25/05/1529/05/15

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