Parameterization of drag and dissolution of rising CO2 drops in seawater
Publisher DOI
Abstract
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.
Date Issued
2005
Publication Type
Article
Subject(s)
Language(s)
en
Author(s)
Haugan, Peter M. | |
Alendal, Guttorm |
Additional Credits
Journal
Geophysical Research Letters
Publisher
American Geophysical Union
ISSN
0094-8276
Access(Rights)
open.access