Mostrar el registro sencillo del ítem
Mixed-mode instability of a miscible interface due to coupling between Rayleigh-Taylor and double-diffusive convective modes
dc.contributor.author | Carballido Landeira, Jorge | |
dc.contributor.author | Trevelyan, P.M.J. | |
dc.contributor.author | Almarcha, C. | |
dc.contributor.author | De Wit, A. | |
dc.date.accessioned | 2024-02-02T06:50:53Z | |
dc.date.available | 2024-02-02T06:50:53Z | |
dc.date.issued | 2013 | |
dc.identifier.issn | 1089-7666 | |
dc.identifier.uri | https://hdl.handle.net/10651/71109 | |
dc.description.abstract | In a gravitational field, a horizontal interface between two miscible fluids can be buoyantly unstable because of double diffusive effects or because of a Rayleigh-Taylor instability arising when a denser fluid lies on top of a less dense one. We show here both experimentally and theoretically that, besides such classical buoyancy-driven instabilities, a new mixed mode dynamics exists when these two instabilities act cooperatively. This is the case when the upper denser solution contains a solute A, which diffuses sufficiently faster than a solute B initially in the lower layer to yield non-monotonic density profiles after contact of the two solutions. We derive analytically the conditions for existence of this mixed mode in the (R, δ) parameter plane, where R is the buoyancy ratio between the two solutions and δ is the ratio of diffusion coefficient of the solutes. We find an excellent agreement of these theoretical predictions with experiments performed in Hele-Shaw cells and with numerical simulations. | spa |
dc.description.sponsorship | A.D. acknowledges Prodex, the “Actions de Recherches Concertées CONVINCE” programme and FRS-FNRS for financial support. J.C.-L. thanks MICINN for funding through research (Project No. FIS2010-21023) and the FPI grant associated to FIS2007-64698. | spa |
dc.language.iso | eng | spa |
dc.publisher | AIP Publishing | spa |
dc.relation.ispartof | Physics of Fluids, 25, 024107 | spa |
dc.rights | © American Institute of Physics | |
dc.subject | Inestabilidades hidrodinámicas | spa |
dc.subject | Dinámica no lineal de sistemas complejos | spa |
dc.subject | Autoorganización en sistemas fuera del equilibrio | spa |
dc.title | Mixed-mode instability of a miscible interface due to coupling between Rayleigh-Taylor and double-diffusive convective modes | spa |
dc.type | journal article | spa |
dc.identifier.doi | 10.1063/1.4790192 | |
dc.relation.projectID | FIS2010-21023 | spa |
dc.relation.projectID | FIS2007-64698 | spa |
dc.relation.publisherversion | https://doi.org/10.1063/1.4790192 | spa |
dc.type.hasVersion | VoR | spa |
Ficheros en el ítem
Ficheros | Tamaño | Formato | Ver |
---|---|---|---|
No hay ficheros asociados a este ítem. |
Este ítem aparece en la(s) siguiente(s) colección(ones)
-
Artículos [34664]