Geodesic
On mechanisms of the hydrate shell growth on the surface of supernatant gas bubbles
Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mehanika, no. 3 (2015), pp. 73-86

Voir la notice de l'article provenant de la source Math-Net.Ru

A theoretical model of the methane bubble migration under conditions of the hydrate development in an upward flow of water in a vertical pipe is proposed and constructed. We consider two limiting mechanisms that determine the hydrate development kinetics in the process of gas bubble floating-up. If the hydrate development intensity is determined by the heat removal from the bubble surface by a liquid, the height at which the hydrate formation process terminates amounts to fractions of meters; in the case where the process is limited by gas diffusion through the hydrated peel, tens of meters. The critical mass flow rates of gas and water needed to complete the process of hydrate formation have been obtained. It is found that the migration of gas bubbles in the reactor is accompanied by two possible modes of the hydrate development depending on the initial mass flow rate of water: gas bubbles go over into the hydrated state either completely as separate inclusions or partially with the formation of bubbles with a hydrate shell. The influence of the initial mass flow of water on the dynamics of the hydrate formation process is analyzed at different values of hydrostatic pressure (or gas source operation depths).
Keywords: hydrate shell, water, gas, tubular reactor, heat removal
Mots-clés : diffusion. 
@article{VTGU_2015_3_a9,
     author = {V. Sh. Shagapov and A. S. Chiglintseva and A. A. Rusinov},
     title = {On mechanisms of the hydrate shell growth on the surface of supernatant gas bubbles},
     journal = {Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mehanika},
     pages = {73--86},
     publisher = {mathdoc},
     number = {3},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTGU_2015_3_a9/}
}
TY  - JOUR
AU  - V. Sh. Shagapov
AU  - A. S. Chiglintseva
AU  - A. A. Rusinov
TI  - On mechanisms of the hydrate shell growth on the surface of supernatant gas bubbles
JO  - Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mehanika
PY  - 2015
SP  - 73
EP  - 86
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/VTGU_2015_3_a9/
LA  - ru
ID  - VTGU_2015_3_a9
ER  - 
%0 Journal Article
%A V. Sh. Shagapov
%A A. S. Chiglintseva
%A A. A. Rusinov
%T On mechanisms of the hydrate shell growth on the surface of supernatant gas bubbles
%J Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mehanika
%D 2015
%P 73-86
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/VTGU_2015_3_a9/
%G ru
%F VTGU_2015_3_a9
V. Sh. Shagapov; A. S. Chiglintseva; A. A. Rusinov. On mechanisms of the hydrate shell growth on the surface of supernatant gas bubbles. Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mehanika, no. 3 (2015), pp. 73-86. http://geodesic.mathdoc.fr/item/VTGU_2015_3_a9/