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Post-nucleation conversion of an air bubble to clathrate air-hydrate crystal in ice

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dc.contributor.author Salamatin A.
dc.contributor.author Hondoh T.
dc.contributor.author Uchida T.
dc.contributor.author Lipenkov V.
dc.date.accessioned 2018-09-17T20:21:18Z
dc.date.available 2018-09-17T20:21:18Z
dc.date.issued 1998
dc.identifier.issn 0022-0248
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/133386
dc.description.abstract We present an attempt to model the process of conversion of an air bubble, trapped in ice, to clathrate air-hydrate crystal after its nucleation on the air-ice interface. Both counterparts of the transformation are considered: diffusion of interstitial water and air molecules through the growing hydrate layer that coats the bubble surface, and compressive deformation of the three-phase (air-hydrate-ice) system at a given temperature and load pressure. The mathematical model is constrained by laboratory experiments covering a wide range of thermodynamic conditions. Computational tests show that either diffusion or bubble compression can be the rate-limiting step in the post-nucleation growth of air-hydrate crystal. As a plastic material, air-hydrate appears to be, at least, one order harder than ice. The mass transfer coefficient for the diffusion of air and water molecules in air-hydrate is estimated to be 0.6-1.3 mm2/yr at 263 K with the activation energy not higher, than 30-50 kJ/mol. The mass flux of air, although small in comparison with that of water, plays an important role in the conversion. Special attention is paid to the case of air-hydrate growth in air bubbles in polar ice sheets. © 1998 Elsevier Science B.V. All rights reserved.
dc.relation.ispartofseries Journal of Crystal Growth
dc.subject Clathrate air-hydrate
dc.subject Mathematical model
dc.subject Polar ice
dc.subject Post-nucleation growth
dc.title Post-nucleation conversion of an air bubble to clathrate air-hydrate crystal in ice
dc.type Article
dc.relation.ispartofseries-issue 1-2
dc.relation.ispartofseries-volume 193
dc.collection Публикации сотрудников КФУ
dc.relation.startpage 197
dc.source.id SCOPUS00220248-1998-193-12-SID0032475364


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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