title: Onset of dissolution-driven instabilities in fluids with nonmonotonic density profile.
abstract: Analog systems have recently been used in several experiments in the context of convective mixing of CO(2). We generalize the nonmonotonic density dependence of the growth of instabilities and provide a scaling relation for the onset of instability. The results of linear stability analysis and direct numerical simulations show that these fluids do not resemble the dynamics of CO(2)-water convective instabilities. A typical analog system, such as water-propylene glycol, is found to be less unstable than CO(2)-water. These results provide a basis for further research and proper selection of analog systems and are essential to the interpretation of experiments.
authors.affiliation: Department of Chemical and Petroleum Engineering, Schulich School of Engineering, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4.
authors.forename: Seyed Mostafa Jafari
authors.initials: SM
authors.lastname: Raad
authors.affiliation: Department of Chemical and Petroleum Engineering, Schulich School of Engineering, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4.
authors.forename: Hassan
authors.initials: H
authors.lastname: Hassanzadeh