Lateral movements in Rayleigh–Taylor instabilities due to frontiers. Experimental study
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| Formato: | Artículo publishedVersion |
| Lenguaje: | Inglés |
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American Institute of Physics
2025
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| Acceso en línea: | http://repositorio.ungs.edu.ar:8080/xmlui/handle/UNGS/2370 |
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I71-R177-UNGS-2370 |
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I71-R177-UNGS-23702025-08-07T16:33:46Z Lateral movements in Rayleigh–Taylor instabilities due to frontiers. Experimental study Binda, Leonardo David Fernández, D. D'Onofrio, Alejandro Gustavo Zalts, Anita El Hasi, Claudio Instabilities Reaction CO2 Oscillation Ciencias de la Tierra y relacionadas con el Medio Ambiente Revista con referato Fil: D'Onofrio, Alejandro Gustavo. Universidad Nacional de General Sarmiento. Instituto de Ciencias; Argentina. Fil: D'Onofrio, Alejandro Gustavo. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física. Grupo de Medios Porosos; Argentina. Fil: D'Onofrio, Alejandro Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Binda, Leonardo David. Universidad Nacional de General Sarmiento. Instituto de Ciencias; Argentina. Fil: Zalts, Anita. Universidad Nacional de General Sarmiento. Instituto de Ciencias; Argentina. Lateral movements of the fingers in Rayleigh-Taylor hydrodynamic instabilities at the interface between two fluids are studied. We show that transverse movements appear when a physical boundary is present; these phenomena have not been explained until now. The boundary prevents one of the fluids from crossing it. Such frontiers can be buoyancy driven as, for example, the frontier to the passage of a less dense solution through a denser solution or when different aggregation states coexist (liquid and gaseous phases). An experimental study of the lateral movement velocity of the fingers was performed for different Rayleigh numbers (Ra), and when oscillations were detected, their amplitudes were studied. Liquid-liquid (L–L) and gas-liquid (G–L) systems were analysed. Aqueous HCl and Bromocresol Green (sodium salt, NaBCG) solutions were used in L–L experiments, and CO2 (gas) and aqueous NaOH, NaHCO3, and CaCl2 solutions were employed for the G–L studies. We observed that the lateral movement of the fingers and finger collapses near the interface are more notorious when Ra increases. The consequences of this, for each experience, are a decrease in the number of fingers and an increase in the velocity of the lateral finger movement close to the interface as time evolves. We found that the amplitude of the oscillations did not vary significantly within the considered Ra range. These results have an important implication when determining the wave number of instabilities in an evolving system. The wave number could be strongly diminished if there is a boundary. 2025-08-07T16:28:33Z 2025-08-07T16:28:33Z 2018 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion Binda, L. D., Fernández, D., Zalts, A., El Hasi, C. y D'Onofrio, A. G. (2018). Lateral movements in Rayleigh–Taylor instabilities due to frontiers. Experimental study. Chaos, 28(1), 013107 1054-1500 http://repositorio.ungs.edu.ar:8080/xmlui/handle/UNGS/2370 eng https://doi.org/10.1063/1.4995395 info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-nd/4.0/ application/pdf American Institute of Physics Chaos. Ene. 2018; 28(1): 013107 https://pubs.aip.org/aip/cha/issue/28/1 |
| institution |
Universidad Nacional de General Sarmiento |
| institution_str |
I-71 |
| repository_str |
R-177 |
| collection |
Repositorio Institucional Digital de Acceso Abierto (UNGS) |
| language |
Inglés |
| orig_language_str_mv |
eng |
| topic |
Instabilities Reaction CO2 Oscillation Ciencias de la Tierra y relacionadas con el Medio Ambiente |
| spellingShingle |
Instabilities Reaction CO2 Oscillation Ciencias de la Tierra y relacionadas con el Medio Ambiente Binda, Leonardo David Fernández, D. D'Onofrio, Alejandro Gustavo Zalts, Anita El Hasi, Claudio Lateral movements in Rayleigh–Taylor instabilities due to frontiers. Experimental study |
| topic_facet |
Instabilities Reaction CO2 Oscillation Ciencias de la Tierra y relacionadas con el Medio Ambiente |
| description |
Revista con referato |
| format |
Artículo Artículo publishedVersion |
| author |
Binda, Leonardo David Fernández, D. D'Onofrio, Alejandro Gustavo Zalts, Anita El Hasi, Claudio |
| author_facet |
Binda, Leonardo David Fernández, D. D'Onofrio, Alejandro Gustavo Zalts, Anita El Hasi, Claudio |
| author_sort |
Binda, Leonardo David |
| title |
Lateral movements in Rayleigh–Taylor instabilities due to frontiers. Experimental study |
| title_short |
Lateral movements in Rayleigh–Taylor instabilities due to frontiers. Experimental study |
| title_full |
Lateral movements in Rayleigh–Taylor instabilities due to frontiers. Experimental study |
| title_fullStr |
Lateral movements in Rayleigh–Taylor instabilities due to frontiers. Experimental study |
| title_full_unstemmed |
Lateral movements in Rayleigh–Taylor instabilities due to frontiers. Experimental study |
| title_sort |
lateral movements in rayleigh–taylor instabilities due to frontiers. experimental study |
| publisher |
American Institute of Physics |
| publishDate |
2025 |
| url |
http://repositorio.ungs.edu.ar:8080/xmlui/handle/UNGS/2370 |
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