Dissolution of Multicomponent Bubbles |
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Authors: | MICHAEL C WEINBERG R SHANKAR SUBRAMANIAN |
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Affiliation: | Materials Research and Technology Group, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91103 |
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Abstract: | The behavior of an isolated, stationary, multicomponent gas bubble in a glassmelt containing several dissolved gases is considered. The relevant mass-transport equations are formulated and calculations are performed for the case of two diffusing gases using a quasi-stationary model and a numerical solution of the exact mass-transfer equations. The results obtained from these two approaches are compared. The factors which govern the dissolution or growth of a bubble are thermodynamic and kinetic in origin. The tendency of a bubble to grow or shrink at long times is controlled by departure from overall equilibrium, whereas the short-time bubble dynamics may be dominated by kinetic effects. As a result of the existence of these dual influences, maxima and/or minima occur in the functional dependence of the bubble radius on time. |
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