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Antisymmetric polar modes of thermal convection in rotating spherical fluid shells at high Taylor numbers
dc.contributor.author | García González, Fernando |
dc.contributor.author | Net Marcé, Marta |
dc.contributor.author | Sánchez Umbría, Juan |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Física Aplicada |
dc.date.accessioned | 2010-09-29T09:52:09Z |
dc.date.available | 2010-09-29T09:52:09Z |
dc.date.created | 2008-11-03 |
dc.date.issued | 2008-11-03 |
dc.identifier.citation | Garcia, F.; Net, M.; Sánchez, J. Antisymmetric polar modes of thermal convection in rotating spherical fluid shells at high Taylor numbers. "Physical Review Letters", 03 Novembre 2008, vol. 101, núm. 19, p. 194501-1-194501-4. |
dc.identifier.uri | http://hdl.handle.net/2117/9148 |
dc.description.abstract | The onset of thermal convection in a rotating spherical shell of intermediate radius ratio ¼ 0:4 is studied numerically for Taylor numbers Ta 1011 and the Prandtl number of the liquid sodium ( ¼ 0:01). For the first time, it is shown that at very high Taylor numbers the first unstable mode can be antisymmetric with respect to the equator and confined inside a cylinder tangent to the inner sphere at the equator (polar mode). The exponent of the power law determined from the asymptotic dependence of the critical Rayleigh number for very high Ta is 0.57, lower than 2=3, given theoretically for the spiraling columnar modes, and than 0.63, found numerically for the outer equatorially attached modes |
dc.language.iso | eng |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Física::Astronomia i astrofísica |
dc.subject.lcsh | Convection (Astrophysics) |
dc.title | Antisymmetric polar modes of thermal convection in rotating spherical fluid shells at high Taylor numbers |
dc.type | Article |
dc.subject.lemac | Calor -- Convecció |
dc.contributor.group | Universitat Politècnica de Catalunya. DF - Dinàmica No Lineal de Fluids |
dc.identifier.doi | 10.1103/PhysRevLett.101.194501 |
dc.description.peerreviewed | Peer Reviewed |
dc.rights.access | Open Access |
local.identifier.drac | 2639810 |
dc.description.version | Postprint (published version) |
local.citation.author | Garcia, F.; Net, M.; Sánchez, J. |
local.citation.publicationName | Physical Review Letters |
local.citation.volume | 101 |
local.citation.number | 19 |
local.citation.startingPage | 194501-1 |
local.citation.endingPage | 194501-4 |
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