Stable, quasi-stable and unstable physicochemical hydrodynamic flows in thin-layer cell electrodeposition
Electrodeposition in thin cells of different orientations relative to gravity leads to dendrite growth with a uniform front of the growing tips or to a hierarchy of branch sizes, competing with stable, quasi-stable or unstable physicochemical hydrodynamic flows. Here we report experimental measureme...
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paper:paper_00134686_v51_n15_p3058_Marshall2023-06-08T14:35:54Z Stable, quasi-stable and unstable physicochemical hydrodynamic flows in thin-layer cell electrodeposition Mocskos, Esteban Eduardo Gonzalez, Graciela Alicia Dengra, Silvina Molina, Fernando Victor Iemmi, Claudio César Computational modeling Electrodeposition Ion transport Physicochemical hydrodynamic flows Thin cells Computational methods Electrodeposition Electrodes Fuel cells Mathematical models Vortex flow Computational modeling Ion transport Physicochemical hydrodynamic flows Thin cells Fluid dynamics Electrodeposition in thin cells of different orientations relative to gravity leads to dendrite growth with a uniform front of the growing tips or to a hierarchy of branch sizes, competing with stable, quasi-stable or unstable physicochemical hydrodynamic flows. Here we report experimental measurements of electrodeposition in cells in the vertical position and we introduce a theoretical model predicting many features of these experiments. When the cathode is above the anode, our model predicts that the flow remains globally stable as long as there is no dendrite growth; when dendrites are present, zones of lowered concentration adjacent to a downwards growing finger appears, inducing a gravity driven convective vortex roll wrapped to the finger, leading to a quasi stable flow. In a vertical cell with the anode above the cathode, our model predicts the existence of an unstable flow in the form of vortex tubes or plumes detaching from each electrode, expanding toward one another and mixing. For both cases, in the presence of dendrites, the existence of an electrically driven vortex ring at the dendrite tip is predicted; it allows fluid to penetrate the dendrite tip and to be ejected from its side. © 2005 Elsevier Ltd. All rights reserved. Fil:Mocskos, E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:González, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Dengra, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Molina, F.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Iemmi, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2006 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00134686_v51_n15_p3058_Marshall http://hdl.handle.net/20.500.12110/paper_00134686_v51_n15_p3058_Marshall |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Computational modeling Electrodeposition Ion transport Physicochemical hydrodynamic flows Thin cells Computational methods Electrodeposition Electrodes Fuel cells Mathematical models Vortex flow Computational modeling Ion transport Physicochemical hydrodynamic flows Thin cells Fluid dynamics |
| spellingShingle |
Computational modeling Electrodeposition Ion transport Physicochemical hydrodynamic flows Thin cells Computational methods Electrodeposition Electrodes Fuel cells Mathematical models Vortex flow Computational modeling Ion transport Physicochemical hydrodynamic flows Thin cells Fluid dynamics Mocskos, Esteban Eduardo Gonzalez, Graciela Alicia Dengra, Silvina Molina, Fernando Victor Iemmi, Claudio César Stable, quasi-stable and unstable physicochemical hydrodynamic flows in thin-layer cell electrodeposition |
| topic_facet |
Computational modeling Electrodeposition Ion transport Physicochemical hydrodynamic flows Thin cells Computational methods Electrodeposition Electrodes Fuel cells Mathematical models Vortex flow Computational modeling Ion transport Physicochemical hydrodynamic flows Thin cells Fluid dynamics |
| description |
Electrodeposition in thin cells of different orientations relative to gravity leads to dendrite growth with a uniform front of the growing tips or to a hierarchy of branch sizes, competing with stable, quasi-stable or unstable physicochemical hydrodynamic flows. Here we report experimental measurements of electrodeposition in cells in the vertical position and we introduce a theoretical model predicting many features of these experiments. When the cathode is above the anode, our model predicts that the flow remains globally stable as long as there is no dendrite growth; when dendrites are present, zones of lowered concentration adjacent to a downwards growing finger appears, inducing a gravity driven convective vortex roll wrapped to the finger, leading to a quasi stable flow. In a vertical cell with the anode above the cathode, our model predicts the existence of an unstable flow in the form of vortex tubes or plumes detaching from each electrode, expanding toward one another and mixing. For both cases, in the presence of dendrites, the existence of an electrically driven vortex ring at the dendrite tip is predicted; it allows fluid to penetrate the dendrite tip and to be ejected from its side. © 2005 Elsevier Ltd. All rights reserved. |
| author |
Mocskos, Esteban Eduardo Gonzalez, Graciela Alicia Dengra, Silvina Molina, Fernando Victor Iemmi, Claudio César |
| author_facet |
Mocskos, Esteban Eduardo Gonzalez, Graciela Alicia Dengra, Silvina Molina, Fernando Victor Iemmi, Claudio César |
| author_sort |
Mocskos, Esteban Eduardo |
| title |
Stable, quasi-stable and unstable physicochemical hydrodynamic flows in thin-layer cell electrodeposition |
| title_short |
Stable, quasi-stable and unstable physicochemical hydrodynamic flows in thin-layer cell electrodeposition |
| title_full |
Stable, quasi-stable and unstable physicochemical hydrodynamic flows in thin-layer cell electrodeposition |
| title_fullStr |
Stable, quasi-stable and unstable physicochemical hydrodynamic flows in thin-layer cell electrodeposition |
| title_full_unstemmed |
Stable, quasi-stable and unstable physicochemical hydrodynamic flows in thin-layer cell electrodeposition |
| title_sort |
stable, quasi-stable and unstable physicochemical hydrodynamic flows in thin-layer cell electrodeposition |
| publishDate |
2006 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00134686_v51_n15_p3058_Marshall http://hdl.handle.net/20.500.12110/paper_00134686_v51_n15_p3058_Marshall |
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