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Oscillatory convection in rotating spherical shells: low Prandtl number and non-slip boundary conditions
dc.contributor.author | García González, Fernando |
dc.contributor.author | Sánchez Umbría, Juan |
dc.contributor.author | Dormy, Emmanuel |
dc.contributor.author | Net Marcé, Marta |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Física |
dc.date.accessioned | 2016-01-27T09:57:30Z |
dc.date.available | 2016-01-27T09:57:30Z |
dc.date.issued | 2015-10-01 |
dc.identifier.citation | Garcia, F., Sanchez, J., Dormy, E., Net, M. Oscillatory convection in rotating spherical shells: low Prandtl number and non-slip boundary conditions. "SIAM journal on applied mathematics", 01 Octubre 2015, vol. 14, núm. 4, p. 1787-1807. |
dc.identifier.issn | 0036-1399 |
dc.identifier.uri | http://hdl.handle.net/2117/82104 |
dc.description.abstract | A five-degree model, which reproduces faithfully the sequence of bifurcations and the type of solutions found through numerical simulations of the three-dimensional Boussinesq thermal convection equations in rotating spherical shells with fixed azimuthal symmetry, is derived. A low Prandtl number fluid of s=0. 1 subject to radial gravity, filling a shell of radius ratio ¿=0.35, differentially heated, and with non-slip boundary conditions, is considered. Periodic, quasi-periodic, and temporal chaotic flows are obtained for a moderately small Ekman number, E=10-4,andatsupercritical Rayleigh numbers of order Ra~O(2Rac). The solutions are classified by means of frequency analysis and Poincaré sections. Resonant phase locking on the quasi-periodic branches,as well as a sequence of period doubling bifurcations, are also detected. |
dc.format.extent | 21 p. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Física |
dc.subject.lcsh | Heat -- Convection |
dc.subject.lcsh | Flows (Differentiable dynamical systems) |
dc.subject.other | thermal convection |
dc.subject.other | rotating flows |
dc.subject.other | spherical geometry |
dc.subject.other | modulated wave solutions |
dc.subject.other | period doubling |
dc.subject.other | low-dimensional model |
dc.title | Oscillatory convection in rotating spherical shells: low Prandtl number and non-slip boundary conditions |
dc.type | Article |
dc.subject.lemac | Calor -- Convecció |
dc.subject.lemac | Fluxos (Sistemes dinàmics diferenciables) |
dc.contributor.group | Universitat Politècnica de Catalunya. DF - Dinàmica No Lineal de Fluids |
dc.identifier.doi | 10.1137/15M100729X |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | http://epubs.siam.org/doi/pdf/10.1137/15M100729X |
dc.rights.access | Open Access |
local.identifier.drac | 17390951 |
dc.description.version | Postprint (published version) |
local.citation.author | Garcia, F.; Sanchez, J.; Dormy, E.; Net, M. |
local.citation.publicationName | SIAM journal on applied mathematics |
local.citation.volume | 14 |
local.citation.number | 4 |
local.citation.startingPage | 1787 |
local.citation.endingPage | 1807 |
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