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Titolo:
Thermal Rossby waves in a rotating annulus. Their stability - art. no. 056312
Autore:
Pino, D; Net, M; Sanchez, J; Mercader, I;
Indirizzi:
Univ Politecn Catalunya, Dept Fis Aplicada, ES-08034 Barcelona, Spain UnivPolitecn Catalunya Barcelona Spain ES-08034 -08034 Barcelona, Spain
Titolo Testata:
PHYSICAL REVIEW E
fascicolo: 5, volume: 6305, anno: 2001,
parte:, 2
pagine: 6312 -
SICI:
1063-651X(200105)6305:5<6312:TRWIAR>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
SPHERICAL FLUID SHELLS; LOW PRANDTL NUMBERS; CYLINDRICAL ANNULUS; COLUMNAR CONVECTION; POISEUILLE FLOW; INSTABILITIES; TRANSITION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Pino, D Univ Politecn Catalunya, Dept Fis Aplicada, Jordi Girona 1-3,Campus Nord,Modul B-4, ES-08034 Barcelona, Spain Univ Politecn Catalunya Jordi Girona 1-3,Campus Nord,Modul B-4 Barcelona Spain ES-08034
Citazione:
D. Pino et al., "Thermal Rossby waves in a rotating annulus. Their stability - art. no. 056312", PHYS REV E, 6305(5), 2001, pp. 6312

Abstract

Nonlinear thermal convection in a fast rotating annulus about its axis, with slightly inclined ends, radial gravity and heating, is studied numerically for a fluid of Prandtl number sigma = 0.7 and different values of the radius ratio and rotation rate. The properties of the rotating waves that appear after the Hopf bifurcation of the conductive slate are analyzed. Near the critical Rayleigh number, different types of solutions with the same wave number coexist, and they are classified as a function of their connectionwith the two types of modes identified in the linear analysis for this Prandtl number. For different rotation rates, the stability of the primary solutions as a function of the radius ratio is also studied. The shape of the stability regions and the type of dominant disturbances that limit these regions are very sensitive to the proximity to the value of the radius ratio for which the type of dominant mode changes.

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Documento generato il 11/07/20 alle ore 17:02:04