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dc.contributor.author
Levitán, David Adrián
dc.contributor.author
D'onofrio, Alejandro Gustavo
dc.date.available
2023-03-13T10:55:45Z
dc.date.issued
2012-09
dc.identifier.citation
Levitán, David Adrián; D'onofrio, Alejandro Gustavo; Influence of temperature on linear stability in buoyancy-driven fingering of reaction-diffusion fronts; American Institute of Physics; Chaos; 22; 3; 9-2012; 1-5
dc.identifier.issn
1054-1500
dc.identifier.uri
http://hdl.handle.net/11336/190271
dc.description.abstract
A vertical Hele-Shaw cell was used to study the influence of temperature on Rayleigh-Taylor instabilities on reaction-diffusion fronts. The propagation of the chemical front can thus be observed, and experimental results can be obtained via image treatment. A chemical front produced by the coupling between molecular diffusion and the auto-catalysis of the chlorite-tetrathionate reaction, descends through the cell, consuming the reactants below while the product is formed above. Buoyancy-driven instabilities are formed due to the density difference between reactants and products, and the front takes a fingering pattern, whose growth rate has temperature dependence. In this study, the effect of temperature on the linear regime of the instability (that is, when the effects of such instability start to appear) was analyzed. To measure the instability, Fourier transform analysis is performed, in order to obtain the different wave numbers and their power as a function of time. Thus, the growth rate for each wave number and the most unstable wave number is obtained for each of the temperatures under study. Based on repeated experiments, a decrease in the growth rate for the most unstable wave number can be observed with the increase of temperature.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Institute of Physics
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Reaction-Diffusion instability
dc.subject
Raleigh Taylor instability
dc.subject.classification
Física de los Fluidos y Plasma
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
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Físico-Química, Ciencia de los Polímeros, Electroquímica
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Ciencias Químicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Influence of temperature on linear stability in buoyancy-driven fingering of reaction-diffusion fronts
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-03-07T11:23:55Z
dc.journal.volume
22
dc.journal.number
3
dc.journal.pagination
1-5
dc.journal.pais
Estados Unidos
dc.journal.ciudad
New York
dc.description.fil
Fil: Levitán, David Adrián. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física. Grupo de Medios Porosos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: D'onofrio, Alejandro Gustavo. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física. Grupo de Medios Porosos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Chaos
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1063/1.4753924
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