A computational fluid dynamics study of hydrogen bubbles in an electrochemical reactor
Most electrochemical reactors present reactions with the growth and departure of gas bubbles which influence on the reactor hydrodynamics and this study is usually complex, representing a vast field for research. The present paper had as objective to study a bi-phase (gas-liquid) system aiming to fo...
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| Format: | Article |
| Language: | English |
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Instituto de Tecnologia do Paraná (Tecpar)
2005-06-01
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| Series: | Brazilian Archives of Biology and Technology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000400027 |
| _version_ | 1818213146489257984 |
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| author | Renata da Silva Cavalcanti Severino Rodrigues de Farias Neto Eudésio Oliveira Vilar |
| author_facet | Renata da Silva Cavalcanti Severino Rodrigues de Farias Neto Eudésio Oliveira Vilar |
| author_sort | Renata da Silva Cavalcanti |
| collection | DOAJ |
| description | Most electrochemical reactors present reactions with the growth and departure of gas bubbles which influence on the reactor hydrodynamics and this study is usually complex, representing a vast field for research. The present paper had as objective to study a bi-phase (gas-liquid) system aiming to foresee the influence of departure of hydrogen bubbles generated on effective electrode surface situated on cathodic semi-cell. Nevertheless, it was idealized that the gas was injected into the semi cell, through the effective electrode surface With this hypothesis, it was possible to study, and numerically analyze, the hydrodynamic behavior of the hydrogen bubbles in the interior of the study domain, applying concepts of computational fluid dynamics by using the computational applicative CFX-4 for the application of the MUSIG ("MUltiple-SIze-Group") model, taking into consideration the phenomena of coalescence and the distribution of the diameter of the bubbles.<br>A maioria dos reatores eletroquímicos apresenta reações com crescimento e desprendimento de bolhas de gás influenciando na hidrodinâmica dos reatores e seu estudo é, geralmente, complexo representando um campo amplo para pesquisas. O presente artigo teve por objetivo estudar um sistema bifásico (gás-líquido) visando prever a influência do desprendimento das bolhas de hidrogênio geradas na superfície específica do eletrodo localizada na semicélula catódica. No entanto, foi idealizado que o gás fora injetado no interior da semicélula através da superfície específica do eletrodo. Com esta hipótese, foi possível estudar e analisar numericamente o comportamento hidrodinâmico das bolhas de hidrogênio no interior do domínio de estudo, aplicando-se os conceitos de fluidodinâmica computacional usando o aplicativo computacional CFX-4 para aplicação do modelo MUSIG ("Multiple-size-group") levando em consideração os fenômenos da coalescência e da distribuição do diâmetro das bolhas. |
| first_indexed | 2024-12-12T05:59:39Z |
| format | Article |
| id | doaj.art-546cad03d990449baa02acfa602b175e |
| institution | Directory Open Access Journal |
| issn | 1516-8913 1678-4324 |
| language | English |
| last_indexed | 2024-12-12T05:59:39Z |
| publishDate | 2005-06-01 |
| publisher | Instituto de Tecnologia do Paraná (Tecpar) |
| record_format | Article |
| series | Brazilian Archives of Biology and Technology |
| spelling | doaj.art-546cad03d990449baa02acfa602b175e2022-12-22T00:35:27ZengInstituto de Tecnologia do Paraná (Tecpar)Brazilian Archives of Biology and Technology1516-89131678-43242005-06-0148spe21922910.1590/S1516-89132005000400027A computational fluid dynamics study of hydrogen bubbles in an electrochemical reactorRenata da Silva CavalcantiSeverino Rodrigues de Farias NetoEudésio Oliveira VilarMost electrochemical reactors present reactions with the growth and departure of gas bubbles which influence on the reactor hydrodynamics and this study is usually complex, representing a vast field for research. The present paper had as objective to study a bi-phase (gas-liquid) system aiming to foresee the influence of departure of hydrogen bubbles generated on effective electrode surface situated on cathodic semi-cell. Nevertheless, it was idealized that the gas was injected into the semi cell, through the effective electrode surface With this hypothesis, it was possible to study, and numerically analyze, the hydrodynamic behavior of the hydrogen bubbles in the interior of the study domain, applying concepts of computational fluid dynamics by using the computational applicative CFX-4 for the application of the MUSIG ("MUltiple-SIze-Group") model, taking into consideration the phenomena of coalescence and the distribution of the diameter of the bubbles.<br>A maioria dos reatores eletroquímicos apresenta reações com crescimento e desprendimento de bolhas de gás influenciando na hidrodinâmica dos reatores e seu estudo é, geralmente, complexo representando um campo amplo para pesquisas. O presente artigo teve por objetivo estudar um sistema bifásico (gás-líquido) visando prever a influência do desprendimento das bolhas de hidrogênio geradas na superfície específica do eletrodo localizada na semicélula catódica. No entanto, foi idealizado que o gás fora injetado no interior da semicélula através da superfície específica do eletrodo. Com esta hipótese, foi possível estudar e analisar numericamente o comportamento hidrodinâmico das bolhas de hidrogênio no interior do domínio de estudo, aplicando-se os conceitos de fluidodinâmica computacional usando o aplicativo computacional CFX-4 para aplicação do modelo MUSIG ("Multiple-size-group") levando em consideração os fenômenos da coalescência e da distribuição do diâmetro das bolhas.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000400027HydrogenBubbleCFDFinite volumeselectrochemical reactor |
| spellingShingle | Renata da Silva Cavalcanti Severino Rodrigues de Farias Neto Eudésio Oliveira Vilar A computational fluid dynamics study of hydrogen bubbles in an electrochemical reactor Brazilian Archives of Biology and Technology Hydrogen Bubble CFD Finite volumes electrochemical reactor |
| title | A computational fluid dynamics study of hydrogen bubbles in an electrochemical reactor |
| title_full | A computational fluid dynamics study of hydrogen bubbles in an electrochemical reactor |
| title_fullStr | A computational fluid dynamics study of hydrogen bubbles in an electrochemical reactor |
| title_full_unstemmed | A computational fluid dynamics study of hydrogen bubbles in an electrochemical reactor |
| title_short | A computational fluid dynamics study of hydrogen bubbles in an electrochemical reactor |
| title_sort | computational fluid dynamics study of hydrogen bubbles in an electrochemical reactor |
| topic | Hydrogen Bubble CFD Finite volumes electrochemical reactor |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000400027 |
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