Isothermal dissolution of small rising bubbles in a low viscosity liquid
| Autor: | A. Said Mohamed, Jose M. Lopez-Herrera, Miguel A. Herrada, Alfonso M. Gañán-Calvo |
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| Rok vydání: | 2014 |
| Předmět: |
Chemistry
Process Chemistry and Technology General Chemical Engineering Numerical analysis Bubble Energy Engineering and Power Technology Thermodynamics chemistry.chemical_element General Chemistry Gas concentration Oxygen Industrial and Manufacturing Engineering Isothermal process Physics::Fluid Dynamics Atmosphere Mass transfer Dissolution Astrophysics::Galaxy Astrophysics |
| Zdroj: | Chemical Engineering and Processing: Process Intensification. 85:136-144 |
| ISSN: | 0255-2701 |
| DOI: | 10.1016/j.cep.2014.08.002 |
| Popis: | The isothermal dissolution of small single rising bubbles in a low viscosity liquid is numerically and experimentally studied. We propose a tracking-interface numerical method to analyze the dissolution of single bubbles rising in an isothermal liquid bath in the limit of small Weber numbers. The key elements of the method are the use of a frame of reference moving with the bubble and the application of different meshes to solve the mechanical and mass-diffusion problems. In addition, the gas concentration in the atmosphere over the bath, determined by mass balance of species in the gas column, is shown to be an essential component of the global dissolution problem in steady regime. Comparison with small oxygen bubbles rising in water has been carried out with remarkable agreement. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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