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This article is cited in 8 scientific papers (total in 8 papers)
Bubble migration during hydrate formation
V. Sh. Shagapov, A. S. Chiglintseva, A. A. Rusinov Birsk Branch of the Bashkir State University, Birsk, 452453, Russia
Abstract:
A model of the process of migration of methane bubbles in water under thermobaric conditions of hydrate formation is proposed. The peculiarities of the temperature field evolution, migration rate, and changes in the radius and volume fraction of gas hydrate bubbles are studied. It is shown that, with a constant mass flow of gas from the reservoir bottom, for all parameters of the surfacing gas hydrate disperse system, there is a quasistationary pattern in the form of a “step”-like wave. Depending on the relationship of the initial gas bubble density with the average gas density in the hydrate composition determined by the depth from which bubbles rise to the surface, the final radius of hydrate particles may be larger or smaller than the initial gas bubble radii. It is established that the speed at which gas hydrate inclusions rise to the surface decreases by several times due to an increase in their weight during hydrate formation. The influence of the depth of the water reservoir whose bottom is a gas flow source on the dynamics of hydrate formation is studied.
Keywords:
hydrate particles, gas bubble migration, hydrate formation.
Received: 04.02.2014 Revised: 29.10.2014
Citation:
V. Sh. Shagapov, A. S. Chiglintseva, A. A. Rusinov, “Bubble migration during hydrate formation”, Prikl. Mekh. Tekh. Fiz., 56:2 (2015), 43–52; J. Appl. Mech. Tech. Phys., 56:2 (2015), 202–210
Linking options:
https://www.mathnet.ru/eng/pmtf963 https://www.mathnet.ru/eng/pmtf/v56/i2/p43
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