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From stationary to complex time-dependent flows at moderate rayleigh numbers in two-dimensional annular thermal convection

Autor
Net, M.; Alonso, Arantxa; Sanchez, J.
Tipus d'activitat
Article en revista
Revista
Physics of fluids
Data de publicació
2003-05
Volum
15(5)
Pàgina inicial
1314
Pàgina final
1326
DOI
https://doi.org/10.1063/1.1565335 Obrir en finestra nova
URL
http://aip.scitation.org/doi/10.1063/1.1565335 Obrir en finestra nova
Resum
Two-dimensional nonlinear thermal convection in a cylindrical annulus is numerically analyzed for a Boussinesq fluid of low Prandtl number s=0.025. For a fixed value of the radius ratio, ¿=0.3, different types of steady columnar patterns are found. The stability of these convection patterns and the spatial interaction between them, which result in the formation of mixed modes, are investigated by considering the full nonlinear set of Navier–Stokes equations. Special attention is paid to the s...
Grup de recerca
DF - Dinàmica No Lineal de Fluids

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