Artículo
Gonzalez, G.; Marshall, G.; Molina, F.; Dengra, S. "Transition from gravito- to electroconvective regimes in thin-layer electrodeposition" (2002) Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics. 65(5):8
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Abstract:
The transition from gravitoconvective to electroconvective prevailing regimes in thin-layer electrochemical deposition is analyzed through variations of electrolyte viscosity at constant cell thickness. The distribution of velocity directions at the deposit front is a measure of the relative weight of electroconvection versus gravitoconvection, and a signature of that transition. The experiments are carried out under galvanostatic conditions in convection prevailing regimes. Particle image velocimetry reveals that at low viscosities, buoyancy driven convection dominates; as viscosity increases, electrically driven convection becomes more important, eventually prevailing. The transition is observed at 1.5 times the viscosity of water. The theoretical model presented reveals that an increase of the Poisson and Reynolds numbers and a decrease of the Peclet and electric Grashof numbers, when viscosity increases, makes the electroconvective motion relatively more important. The model predicts a transition at approximately two times the viscosity of water. We may conclude that, in a physicochemical hydrodynamic flow involving ions, under galvanostatic conditions, increasing viscosity damps gravitoconvection and enhances electroconvection. © 2002 The American Physical Society.
Registro:
| Documento: | Artículo |
| Título: | Transition from gravito- to electroconvective regimes in thin-layer electrodeposition |
| Autor: | Gonzalez, G.; Marshall, G.; Molina, F.; Dengra, S. |
| Filiación: | INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, 1428, Argentina Laboratorio de Sistemas Complejos, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, 1428, Argentina |
| Año: | 2002 |
| Volumen: | 65 |
| Número: | 5 |
| Página de inicio: | 8 |
| DOI: | http://dx.doi.org/10.1103/PhysRevE.65.051607 |
| Título revista: | Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics |
| Título revista abreviado: | Phys Rev E. |
| ISSN: | 1063651X |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1063651X_v65_n5_p8_Gonzalez |
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Citas:
---------- APA ----------
Gonzalez, G., Marshall, G., Molina, F. & Dengra, S. (2002) . Transition from gravito- to electroconvective regimes in thin-layer electrodeposition. Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, 65(5), 8.http://dx.doi.org/10.1103/PhysRevE.65.051607
---------- CHICAGO ----------
Gonzalez, G., Marshall, G., Molina, F., Dengra, S. "Transition from gravito- to electroconvective regimes in thin-layer electrodeposition" . Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics 65, no. 5 (2002) : 8.http://dx.doi.org/10.1103/PhysRevE.65.051607
---------- MLA ----------
Gonzalez, G., Marshall, G., Molina, F., Dengra, S. "Transition from gravito- to electroconvective regimes in thin-layer electrodeposition" . Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, vol. 65, no. 5, 2002, pp. 8.http://dx.doi.org/10.1103/PhysRevE.65.051607
---------- VANCOUVER ----------
Gonzalez, G., Marshall, G., Molina, F., Dengra, S. Transition from gravito- to electroconvective regimes in thin-layer electrodeposition. Phys Rev E. 2002;65(5):8.http://dx.doi.org/10.1103/PhysRevE.65.051607
