Parameterization of drag and dissolution of rising CO2 drops in seawater

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

Preview

Text gangsto05jgr.pdf - Published Version Available under License Publisher holds Copyright. Download (301kB) | Preview

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.

Interest & Impact

Downloads

46 since deposited on 02 Sep 2021
30 in the past 12 months

Citations

5 Citations in Web of Science ®
6 Citations in Scopus

Search

in Google Scholar™

Services

Actions (login required)

Edit item

Actions (login required)

Edit item