<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>32</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Dunn, Richard J.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Modelling the dissolution of a carbon dioxide bubble into Athabasca bitumen</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">oil refining</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1993</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://search.proquest.com/docview/304074265</style></url></web-urls></urls><pub-location><style face="normal" font="default" size="100%">University of Calgary</style></pub-location><volume><style face="normal" font="default" size="100%">Chemical and Petroleum Engineering</style></volume><pages><style face="normal" font="default" size="100%">160</style></pages><language><style face="normal" font="default" size="100%">en</style></language><abstract><style face="normal" font="default" size="100%">The dissolution of a single CO$\sb2$ bubble into Athabasca bitumen was modelled for the cases of static and rising bubbles. The models developed for the dissolution of the static bubble included the more rigorous quasi-stationary model and the simpler molecular diffusion model. For the case of the rising bubble, the models developed were based upon Brian-Hales'/Levich's correlations and Higbie's penetration theory.

Molecular diffusion of the static bubble is shown to be enhanced by low temperatures and high pressures due to the higher CO$\sb2$ solubility and mass diffusivity at these conditions. Dissolution of the rising bubble is influenced by both molecular and convective diffusion effects. The numerical results show that, as a result of the combination of the diffusion effects, there exists a minimum in the bubble dissolution time with respect to temperature.</style></abstract><issue><style face="normal" font="default" size="100%">M. Eng.</style></issue><custom1><style face="normal" font="default" size="100%">Oil &amp; Other Non-renewable Fuels</style></custom1><custom3><style face="normal" font="default" size="100%">http://www.worldcat.org/oclc/150674845</style></custom3><custom4><style face="normal" font="default" size="100%">Science</style></custom4></record></records></xml>