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ISSN Online: 2377-424X

International Heat Transfer Conference 4
August 31 - September 5, 1970, Paris-Versailles, France

EDDY DIFFUSIVITY DISTRIBUTION NEAR THE WALL

Get access (open in a dialog) DOI: 10.1615/IHTC4.1960
pages 1-11

Аннотация

Turbulent heat transfer in a rectangular duct was studied by the use of a Mach-Zehnder interferometer. Experiments were made at Prandtl numbers = 6 ~ 40 and Reynolds numbers = 10,000 ~ 24,000. The eddy diffusivity for heat transfer was expressed by the following equations.

4 < y+ ≤ 14 εH/ν = 1.31 × 10−5 (y+)4

14 < y+ ≤ 42 εH/ν = 1.93 × 10−4 (y+)3

42 < y+ εH/ν = 0.36 y+ - 1

No dependence on the Prandtl number could be detected in the range of the experiment.