Physics – General Physics
Scientific paper
Dec 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989phrva..40.6421s&link_type=abstract
Physical Review A - General Physics, 3rd Series (ISSN 0556-2791), vol. 40, Dec. 1, 1989, p. 6421-6430. Research supported by the
Physics
General Physics
172
Free Convection, Helium, Rayleigh-Benard Convection, Turbulence Effects, Convective Heat Transfer, Flow Velocity, Power Spectra, Prandtl Number, Rayleigh Number, Temperature Gradients
Scientific paper
Turbulence in He-gas free convection was studied at 5 K in a cylindrical cell of aspect ratio 1. It is shown that the large-scale coherent flow is an important feature of the states of turbulence in this small-aspect ratio cell. Measurements of the velocity and the horizontal temperature difference at middle height confirmed the classification of the various turbulent states reported by Heslot et al. (1987). The measured velocity is compared with the calculated free-fall velocity, and the heat transfer rate is compared with the value calculated from the flow advection.
Libchaber Albert
Sano Masaki
Wu Xiao Zhong
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