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Turbulence Heat and Mass Transfer 5. Proceedings of the International Symposium on Turbulence Heat and Mass Transfer
September, 25-29, 2006, Dubrovnik, Croatia

DOI: 10.1615/ICHMT.2006.TurbulHeatMassTransf


ISBN Print: 978-1-56700-229-4

ISSN: 2377-2816

Properties of thermal boundary layer in turbulent Rayleigh-Benard convection

pages 499-502
DOI: 10.1615/ICHMT.2006.TurbulHeatMassTransf.1030
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ABSTRACT

The object of our investigation is the temperature distribution in natural thermal convection using a Rayleigh-Benard experiment. In order to predict the dependence of the thickness and the structure of the thermal boundary layer on the control parameters (constant aspect ratio Γx = 5, Γy = 1 and different Rayleigh numbers) temperature time series and profiles have been measured in the boundary layer under the cooling plate. We present the mean temperature as a function of the distance from the cooling plate with extensive statistical analysis: profiles of the rms temperature fluctuation, skewness and kurtosis.

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