Ocean Systems Engineering

Techno-Press (테크노프레스)
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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)
  • Received : 2012.01.09
  • Accepted : 2012.02.29
  • Published : 2012.03.25
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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.

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References

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