【摘 要】
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We report recent measurements of dimensionless heat transfer, the Nusselt number Nu, in turbulent Rayleigh-Bénard convection (RBC) of three cylindrical samples with the aspect ratio (diameter/height)
【机 构】
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Max Planck Institute for Dynamics and Self Organization, D37073 Goettingen, Germany
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We report recent measurements of dimensionless heat transfer, the Nusselt number Nu, in turbulent Rayleigh-Bénard convection (RBC) of three cylindrical samples with the aspect ratio (diameter/height) T =1.00, 0.50 and 0.33.All samples have the same diameter of 1.1 m but di erent heights.The experiment were conducted in a pressure vessel known as the "Uboot of G(o)ttingen" with compressed sulfur hexa uoride (SF6) gas at a pressure up to 19 bar, which covered the Rayleigh-number range 1 × 1011 ≤ Ra ≤ 4 × 1015 and Prandtl numbers Pr ≌ 0.8.
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