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Experimental study of the velocity field in Rayleigh-Bénard convection

Published online by Cambridge University Press:  12 April 2006

M. Dubois  and
P. Bergé
M. Dubois
Affiliation:
Commissariat à l'Energie Atomique, Division de la Physique, Centre d'Etudes Nucléaires de Saclay, B.P. 2, 91190 Gif-sur-Yvette, France
P. Bergé
Affiliation:
Commissariat à l'Energie Atomique, Division de la Physique, Centre d'Etudes Nucléaires de Saclay, B.P. 2, 91190 Gif-sur-Yvette, France
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Abstract

Local velocity measurements performed in a convecting layer of fluid show that the velocity field can be described by a dominant fundamental velocity mode mixed with an increasing proportion of second and third harmonics as ε, the reduced distance to the convective threshold Rc, is increased from 0 to ∼ 10. The spatial and thermal dependences of the amplitudes of these different modes are reported and compared with theoretical predictions.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 85 , Issue 4 , 27 April 1978 , pp. 641 - 653
Copyright
© 1978 Cambridge University Press

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References

Ahlers, G. 1974 Phys. Rev. Lett. 33, 1185.
Bergé, P. 1975 Fluctuations, Instabilities and Phase Transitions, Nato Adv. Study Inst., vol.B 11, p. 323. Plenum.
Bergé, P. & Dubois, M. 1974 Phys. Rev. Lett. 32, 1041.
Busse, F. H. 1967 J. Math. & Phys. 46, 140.
Busse, F. H. & Whitehead, J. A. 1971 J. Fluid Mech. 47, 305.
Busse, F. H. & Whitehead, J. A. 1974 J. Fluid Mech. 66, 67.
Chen, M. M. & Whitehead, J. A. 1968 J. Fluid Mech. 31, 1.
Davis, S. H. 1968 J. Fluid Mech. 32, 619.
Dubois, M. 1976 Thèse, Paris VI.
Farhadieh, R. & Tankin, R. S. 1974 J. Fluid Mech. 66, 739.
Gollub, J. P., Hulbert, S. L., Dolny, G. M. & Swinney, H. L. 1976 In Photon Correlation Spectroscopy and Velocimetry (ed. E. R. Pike & H. Z. Cummins). Plenum.
Koschmieder, E. L. 1973 Adv. Chem. Phys. 26, 177.
Koschmieder, E. L. & Pallas, S. G. 1974 Inst. J. Heat Mass Transfer 17, 991.
Krishnamurti, R. 1968 J. Fluid Mech. 33, 445, 457.
Krishnamurti, R. 1970 J. Fluid Mech. 42, 295, 309.
Malkus, W. V. R. & Veronis, G. 1958 J. Fluid Mech. 4, 225.
Normand, C., Pomeau, Y. & Velarde, M. G. 1977 Rev. Mod. Phys. 49, 581.
Schlüter, A., Lortz, D. & Busse, F. H. 1965 J. Fluid Mech. 23, 129.
Stork, H. & MÜLLER, O. 1972 J. Fluid Mech. 54, 599.
Wang, C. P. 1972 J. Sci. Instrum. 5, 763.