NDLI: Thermally induced evolution of phase transformations in gas hydrate sediment

Content Provider	Springer Nature Link
Author	Zhang, XuHui Lu, XiaoBing Li, QingPing Yao, HaiYuan
Copyright Year	2010
Abstract	Thermally induced evolution of phase transformations is a basic physical-chemical process in the dissociation of gas hydrate in sediment (GHS). Heat transfer leads to the weakening of the bed soil and the simultaneous establishment of a time varying stress field accompanied by seepage of fluids and deformation of the soil. As a consequence, ground failure could occur causing engineering damage or/and environmental disaster. This paper presents a simplified analysis of the thermal process by assuming that thermal conduction can be decoupled from the flow and deformation process. It is further assumed that phase transformations take place instantaneously. Analytical and numerical results are given for several examples of simplified geometry. Experiments using Tetra-hydro-furan hydrate sediments were carried out in our laboratory to check the theory. By comparison, the theoretical, numerical and experimental results on the evolution of dissociation fronts and temperature in the sediment are found to be in good agreement.
Starting Page	1530
Ending Page	1535
Page Count	6
File Format	PDF
ISSN	16747348
Journal	Science in China Series G
Volume Number	53
Issue Number	8
e-ISSN	18691927
Language	English
Publisher	SP Science China Press
Publisher Date	2010-07-13
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	gas hydrate dissociation front phase transformation thermal conduction Astronomy, Observations and Techniques Classical Continuum Physics Physics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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