期刊
PHYSICAL REVIEW LETTERS
卷 88, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevlett.88.064501
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We report Nusselt number measurements from high Prandtl number turbulent thermal convection experiments. The experiments are conducted in four fluids with the Prandtl number Pr varying from 4 to 1350 and the Rayleigh number Ra from 2 x 10(7) to 3 x 10(10), all in a single convection cell of unity aspect ratio. We find that the measured Nusselt number decreased about similar to20% over the range of Pr spanned in the experiment. The measure data are also found in good agreement with the prediction of a recent theory over the extended range of Pr covered in the experiment.
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