ISSN Online: 2377-424X
ISBN Print: 0-85295-345-3
International Heat Transfer Conference 10
THE EFFECT OF FINITE AMPLITUDE NON-PLANAR FLOW OSCILLATIONS UPON THE ONSET OF RAYLEIGH-BENARD CONVECTION
Abstrakt
Finite amplitude non-planar shear oscillations are
shown to have a significant stabilizing effect upon
the onset of Rayleigh-Benard convection on the basis
of a linear stability analysis. The value of Rac increases monotonically with Pr and Re, at least up to Re = 100 (the maximum value calculated so far).
For Pr = 10 and Re = 100, Rac is roughly 16 times
the critical value without shear. The dependence of
Rac upon the frequency and other flow parameters is discussed. The results have been obtained numerically by means of a Fourier-Galerkin expansion and the use of Floquet theory.