Mathematics – Logic
Scientific paper
May 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3210612g&link_type=abstract
Geophysical Research Letters, Volume 32, Issue 10, CiteID L10612
Mathematics
Logic
2
Oceanography: General: Numerical Modeling (0545, 0560), Oceanography: Physical: Turbulence, Diffusion, And Mixing Processes (4490), Oceanography: Biological And Chemical: Carbon Cycling (0428)
Scientific paper
In this work the dynamics and dissolution of a hydrate-covered CO2 drop were studied, using a numeric model and data from one of very few CO2 experiments performed in the real ocean. A theory including the standard drag curve of rigid spheres was shown not to fit the observed drop rise velocity. However, a drag parameterization supported by numerous laboratory experiments with gas bubbles provides a good match of the observed rise velocity of a liquid CO2 drop covered with hydrate. The results confirm laboratory results showing that shape is a key factor determining the CO2 drop dynamics. We also found that hydrate reduces the mass transfer of the observed drop by a factor of 2, which is compatible with laboratory experiments. Numerical experiments with different drop sizes showed that the choice of drag parameterization has a significant impact on the estimated vertical distribution of dissolved CO2.
Alendal Guttorm
Gangstø Reidun
Haugan Peter M.
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