Mass transfer around a rising bubble in a glass-forming liquid involving oxidation-reduction reaction: Numerical computation of the Sherwood number
| Autor: | Luiz Pereira, Franck Pigeonneau, Annabelle Laplace |
|---|---|
| Přispěvatelé: | Centre de Mise en Forme des Matériaux (CEMEF), Mines Paris - PSL (École nationale supérieure des mines de Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'Energie Atomique, Centre de Marcoule (CEA), MINES ParisTech - École nationale supérieure des mines de Paris |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
oxidation-reduction reaction
Materials science General Chemical Engineering Bubble 02 engineering and technology glass melting Sherwood number Chemical reaction Industrial and Manufacturing Engineering [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] Physics::Fluid Dynamics 020401 chemical engineering Mass transfer mass transfer [MATH.MATH-AP]Mathematics [math]/Analysis of PDEs [math.AP] 0204 chemical engineering Diffusion (business) [CHIM.ORGA]Chemical Sciences/Organic chemistry Applied Mathematics General Chemistry Mechanics Stokes flow 021001 nanoscience & nanotechnology Damköhler numbers finite element 0210 nano-technology Dimensionless quantity |
| Zdroj: | Chemical Engineering Science Chemical Engineering Science, 2020, pp.116382. ⟨10.1016/j.ces.2020.116382⟩ Chemical Engineering Science, Elsevier, 2020, pp.116382. ⟨10.1016/j.ces.2020.116382⟩ |
| ISSN: | 0009-2509 |
| DOI: | 10.1016/j.ces.2020.116382⟩ |
| Popis: | International audience; The mass transfer of a rising bubble in creeping flow regime is numerically investigated. A reversible oxidation-reduction reaction is taken into account. Two coupled equations are needed to study the oxygen and reduced species transport. Three dimensionless numbers are involved: the Péclet and Damköhler numbers and the ratio of the diffusion coefficient of the reduced species to the diffusion coefficient of oxygen. Numerical computations are applied to a soda-lime-silica and a borosilicate glass-forming liquids. Results are focused on the determination of the Sherwood number. The mass transfer enhances strongly when the chemical reaction is very fast, i.e. at large value of Damköhler number. Correlations to determine the enhancement factor are proposed in the two limits of small and large Péclet numbers. The Sherwood number enhances when the diffusion coefficient of the reduced species increases. A correlation of the Sherwood number is proposed taking into account advection and reaction. |
| Databáze: | OpenAIRE |
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