Gangstø, Reidun; Haugan, Peter M.; Alendal, Guttorm (2005). Parameterization of drag and dissolution of rising CO2 drops in seawater. Geophysical Research Letters, 32(10) American Geophysical Union 10.1029/2005GL022637
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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.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
08 Faculty of Science > Physics Institute > Climate and Environmental Physics |
UniBE Contributor: |
Gangstø, Reidun |
Subjects: |
500 Science > 530 Physics |
ISSN: |
0094-8276 |
Publisher: |
American Geophysical Union |
Language: |
English |
Submitter: |
BORIS Import 2 |
Date Deposited: |
02 Sep 2021 14:50 |
Last Modified: |
05 Dec 2022 15:52 |
Publisher DOI: |
10.1029/2005GL022637 |
BORIS DOI: |
10.48350/158460 |
URI: |
https://boris.unibe.ch/id/eprint/158460 |
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