Nonequilibrium Thermodynamics of Hydrate Growth on a Gas-Liquid Interface
We develop a continuum-scale phase-field model to study gas-liquid-hydrate systems far from thermodynamic equilibrium. We design a Gibbs free energy functional for methane-water mixtures that recovers the isobaric temperature-composition phase diagram under thermodynamic equilibrium conditions. The...
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ftcaltechauth:oai:authors.library.caltech.edu:105230 2023-05-15T17:11:57+02:00 Nonequilibrium Thermodynamics of Hydrate Growth on a Gas-Liquid Interface Fu, Xiaojing Cueto-Felgueroso, Luis Juanes, Ruben 2018-04-06 application/pdf https://authors.library.caltech.edu/105230/ https://authors.library.caltech.edu/105230/1/PhysRevLett.120.144501.pdf https://resolver.caltech.edu/CaltechAUTHORS:20200902-151231348 en eng American Physical Society https://authors.library.caltech.edu/105230/1/PhysRevLett.120.144501.pdf Fu, Xiaojing and Cueto-Felgueroso, Luis and Juanes, Ruben (2018) Nonequilibrium Thermodynamics of Hydrate Growth on a Gas-Liquid Interface. Physical Review Letters, 120 (14). Art. No. 144501. ISSN 0031-9007. doi:10.1103/physrevlett.120.144501. https://resolver.caltech.edu/CaltechAUTHORS:20200902-151231348 <https://resolver.caltech.edu/CaltechAUTHORS:20200902-151231348> other Article PeerReviewed 2018 ftcaltechauth https://doi.org/10.1103/physrevlett.120.144501 2021-11-18T18:59:36Z We develop a continuum-scale phase-field model to study gas-liquid-hydrate systems far from thermodynamic equilibrium. We design a Gibbs free energy functional for methane-water mixtures that recovers the isobaric temperature-composition phase diagram under thermodynamic equilibrium conditions. The proposed free energy is incorporated into a phase-field model to study the dynamics of hydrate formation on a gas-liquid interface. We elucidate the role of initial aqueous concentration in determining the direction of hydrate growth at the interface, in agreement with experimental observations. Our model also reveals two stages of hydrate growth at an interface—controlled by a crossover in how methane is supplied from the gas and liquid phases—which could explain the persistence of gas conduits in hydrate-bearing sediments and other nonequilibrium phenomena commonly observed in natural methane hydrate systems. Article in Journal/Newspaper Methane hydrate Caltech Authors (California Institute of Technology) Physical Review Letters 120 14 |
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Caltech Authors (California Institute of Technology) |
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English |
description |
We develop a continuum-scale phase-field model to study gas-liquid-hydrate systems far from thermodynamic equilibrium. We design a Gibbs free energy functional for methane-water mixtures that recovers the isobaric temperature-composition phase diagram under thermodynamic equilibrium conditions. The proposed free energy is incorporated into a phase-field model to study the dynamics of hydrate formation on a gas-liquid interface. We elucidate the role of initial aqueous concentration in determining the direction of hydrate growth at the interface, in agreement with experimental observations. Our model also reveals two stages of hydrate growth at an interface—controlled by a crossover in how methane is supplied from the gas and liquid phases—which could explain the persistence of gas conduits in hydrate-bearing sediments and other nonequilibrium phenomena commonly observed in natural methane hydrate systems. |
format |
Article in Journal/Newspaper |
author |
Fu, Xiaojing Cueto-Felgueroso, Luis Juanes, Ruben |
spellingShingle |
Fu, Xiaojing Cueto-Felgueroso, Luis Juanes, Ruben Nonequilibrium Thermodynamics of Hydrate Growth on a Gas-Liquid Interface |
author_facet |
Fu, Xiaojing Cueto-Felgueroso, Luis Juanes, Ruben |
author_sort |
Fu, Xiaojing |
title |
Nonequilibrium Thermodynamics of Hydrate Growth on a Gas-Liquid Interface |
title_short |
Nonequilibrium Thermodynamics of Hydrate Growth on a Gas-Liquid Interface |
title_full |
Nonequilibrium Thermodynamics of Hydrate Growth on a Gas-Liquid Interface |
title_fullStr |
Nonequilibrium Thermodynamics of Hydrate Growth on a Gas-Liquid Interface |
title_full_unstemmed |
Nonequilibrium Thermodynamics of Hydrate Growth on a Gas-Liquid Interface |
title_sort |
nonequilibrium thermodynamics of hydrate growth on a gas-liquid interface |
publisher |
American Physical Society |
publishDate |
2018 |
url |
https://authors.library.caltech.edu/105230/ https://authors.library.caltech.edu/105230/1/PhysRevLett.120.144501.pdf https://resolver.caltech.edu/CaltechAUTHORS:20200902-151231348 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
https://authors.library.caltech.edu/105230/1/PhysRevLett.120.144501.pdf Fu, Xiaojing and Cueto-Felgueroso, Luis and Juanes, Ruben (2018) Nonequilibrium Thermodynamics of Hydrate Growth on a Gas-Liquid Interface. Physical Review Letters, 120 (14). Art. No. 144501. ISSN 0031-9007. doi:10.1103/physrevlett.120.144501. https://resolver.caltech.edu/CaltechAUTHORS:20200902-151231348 <https://resolver.caltech.edu/CaltechAUTHORS:20200902-151231348> |
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other |
op_doi |
https://doi.org/10.1103/physrevlett.120.144501 |
container_title |
Physical Review Letters |
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120 |
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14 |
_version_ |
1766068709425676288 |