Lateral movements in Rayleigh–Taylor instabilities due to frontiers. Numerical analysis
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| Formato: | Artículo publishedVersion |
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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/2369 |
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I71-R177-UNGS-2369 |
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I71-R177-UNGS-23692025-08-07T16:36:45Z Lateral movements in Rayleigh–Taylor instabilities due to frontiers. Numerical analysis 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. Numerical simulations were performed for Rayleigh-Taylor (RT) hydrodynamic instabilities when a frontier is present. The frontier formed by the interface between two fluids prevents the free movement of the fingers created by the instability. As a consequence, transversal movements at the rear of the fingers are observed in this area. These movements produce collapse of the fingers (two or more fingers join in one finger) or oscillations in the case that there is no collapse. The transversal velocity of the fingers, the amplitude of the oscillations, and the wave number of the RT instabilities as a function of the Rayleigh number (Ra) were studied near the frontier. We verified numerically that in classical RT instabilities, without a frontier, these lateral movements do not occur; only with a physical frontier, the transversal displacements of the fingers appear. The transverse displacement velocity and the initial wave number increase with Ra. This leads to the collapse of the fingers, diminishing the wave number of the instabilities at the interface. Instead, no significant changes in the amplitude of the oscillations are observed modifying Ra. The numerical results are independent of the type or origin of the frontier (gas-liquid, liquid-liquid, or solid-liquid). The numerical results are in good agreement with the experimental results reported by Binda et al. [Chaos 28, 013107 (2018)]. Based on these results, it was possible to determine the cause of the transverse displacements, which had not been explained until now. 2025-08-07T16:28:32Z 2025-08-07T16:28:32Z 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. Numerical analysis. Chaos, 28(1), 013108. 1054-1500 http://repositorio.ungs.edu.ar:8080/xmlui/handle/UNGS/2369 eng https://doi.org/10.1063/1.4995396 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): 013108 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. Numerical analysis |
| 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. Numerical analysis |
| title_short |
Lateral movements in Rayleigh–Taylor instabilities due to frontiers. Numerical analysis |
| title_full |
Lateral movements in Rayleigh–Taylor instabilities due to frontiers. Numerical analysis |
| title_fullStr |
Lateral movements in Rayleigh–Taylor instabilities due to frontiers. Numerical analysis |
| title_full_unstemmed |
Lateral movements in Rayleigh–Taylor instabilities due to frontiers. Numerical analysis |
| title_sort |
lateral movements in rayleigh–taylor instabilities due to frontiers. numerical analysis |
| publisher |
American Institute of Physics |
| publishDate |
2025 |
| url |
http://repositorio.ungs.edu.ar:8080/xmlui/handle/UNGS/2369 |
| work_keys_str_mv |
AT bindaleonardodavid lateralmovementsinrayleightaylorinstabilitiesduetofrontiersnumericalanalysis AT fernandezd lateralmovementsinrayleightaylorinstabilitiesduetofrontiersnumericalanalysis AT donofrioalejandrogustavo lateralmovementsinrayleightaylorinstabilitiesduetofrontiersnumericalanalysis AT zaltsanita lateralmovementsinrayleightaylorinstabilitiesduetofrontiersnumericalanalysis AT elhasiclaudio lateralmovementsinrayleightaylorinstabilitiesduetofrontiersnumericalanalysis |
| _version_ |
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