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DOI: 10.1615/HeatTransRes.v33.i3-4.50
4 pages

Free-Convective Heat Transfer in the Vicinity of a Thermodynamic Critical Point

Yu. G. Leonenko
Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences Novosibirsk, Russia
V. A. Antipin
Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences Novosibirsk, Russia

ABSTRACT

Experiments on natural-convection heat transfer from a heated horizontal cylinder to fluid were performed for a wide range of bulk conditions. In near-critical states the deviation of the dimensionless coefficient of heat transfer from a Nusselt-type correlation was observed. This phenomenon can be explained by the existence of three boundary layers.