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http://dx.doi.org/10.12989/ose.2012.2.1.017

Modeling of non-isothermal CO2 particle leaked from pressurized source: I. Behavior of single bubble  

Chang, Daejun (Division of Ocean Systems Engineering, Korea Advanced Institute of Science and Technology)
Han, Sang Heon (Division of Ocean Systems Engineering, Korea Advanced Institute of Science and Technology)
Yang, Kyung-Won (Det Norske Veritas Korea)
Publication Information
Ocean Systems Engineering / v.2, no.1, 2012 , pp. 17-31 More about this Journal
Abstract
This study investigated the behavior of a non-isothermal $CO_2$ bubble formed through a leak process from a high-pressure source in a deep sea. Isenthalpic interpretation was employed to predict the state of the bubble just after the leak. Three modes of mass loss from the rising bubble were demonstrated: dissolution induced by mass transfer, condensation by heat transfer and phase separation by pressure decrease. A graphical interpretation of the last mode was provided in the pressure-enthalpy diagram. A threshold pressure (17.12 bar) was identified below which the last mode was no longer present. The second mode was as effective as the first for a bubble formed in deep water, leading to faster mass loss. To the contrary, only the first mode was active for a bubble formed in a shallow region. The third mode was insignificant for all cases.
Keywords
$CO_2$; bubble; depletion; dissolution; condensation; isenthalpic expansion;
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