The phase-field theory applied to CO2 and CH4 hydrate

Atle Svandal, Bjørn Kvamme, Làszlò Grànàsy, Tamàs Pusztai, Trygve Buanes, Joakim Hove

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31 Citations (Scopus)

Abstract

A phase-field theory is applied to model the growth of carbon dioxide hydrate and methane hydrate from a supersaturated solution in water. Temperature- and pressure-dependent thermodynamics for the two systems are accounted for. Simulations of the growth of a planar hydrate film and a circular hydrate nucleus are presented and the interface velocity has been extrapolated from the results to experimental time scales. We discuss how pressure and temperature affects the growth rate and argue that the governing process for the dynamics is the chemical diffusion of the guest molecule in the aqueous solution. We also present results from anisotropic simulations and outline how this will affect the growth.

Original languageEnglish
Pages (from-to)486-490
Number of pages5
JournalJournal of Crystal Growth
Volume287
Issue number2
DOIs
Publication statusPublished - Jan 25 2006

Keywords

  • A1. Diffusion
  • A1. Gas hydrate
  • A1. Phase-field theory
  • B1. Carbon dioxide
  • B1. Methane

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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    Svandal, A., Kvamme, B., Grànàsy, L., Pusztai, T., Buanes, T., & Hove, J. (2006). The phase-field theory applied to CO2 and CH4 hydrate. Journal of Crystal Growth, 287(2), 486-490. https://doi.org/10.1016/j.jcrysgro.2005.11.071