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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ftosti:oai:osti.gov:1505593 2023-07-30T04:04:55+02:00 Nonequilibrium Thermodynamics of Hydrate Growth on a Gas-Liquid Interface Fu, Xiaojing Cueto-Felgueroso, Luis Juanes, Ruben 2023-06-29 application/pdf http://www.osti.gov/servlets/purl/1505593 https://www.osti.gov/biblio/1505593 https://doi.org/10.1103/physrevlett.120.144501 unknown http://www.osti.gov/servlets/purl/1505593 https://www.osti.gov/biblio/1505593 https://doi.org/10.1103/physrevlett.120.144501 doi:10.1103/physrevlett.120.144501 71 CLASSICAL AND QUANTUM MECHANICS GENERAL PHYSICS 2023 ftosti https://doi.org/10.1103/physrevlett.120.144501 2023-07-11T09:32:29Z 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 hydratebearing sediments and other nonequilibrium phenomena commonly observed in natural methane hydrate systems. Other/Unknown Material Methane hydrate SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Physical Review Letters 120 14 |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
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language |
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71 CLASSICAL AND QUANTUM MECHANICS GENERAL PHYSICS |
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71 CLASSICAL AND QUANTUM MECHANICS GENERAL PHYSICS Fu, Xiaojing Cueto-Felgueroso, Luis Juanes, Ruben Nonequilibrium Thermodynamics of Hydrate Growth on a Gas-Liquid Interface |
topic_facet |
71 CLASSICAL AND QUANTUM MECHANICS GENERAL PHYSICS |
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 hydratebearing sediments and other nonequilibrium phenomena commonly observed in natural methane hydrate systems. |
author |
Fu, Xiaojing Cueto-Felgueroso, Luis Juanes, Ruben |
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 |
publishDate |
2023 |
url |
http://www.osti.gov/servlets/purl/1505593 https://www.osti.gov/biblio/1505593 https://doi.org/10.1103/physrevlett.120.144501 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
http://www.osti.gov/servlets/purl/1505593 https://www.osti.gov/biblio/1505593 https://doi.org/10.1103/physrevlett.120.144501 doi:10.1103/physrevlett.120.144501 |
op_doi |
https://doi.org/10.1103/physrevlett.120.144501 |
container_title |
Physical Review Letters |
container_volume |
120 |
container_issue |
14 |
_version_ |
1772816550984679424 |