Title: Matched boundary layers in turbulent Rayleigh-Benard convection of mercury
Authors: Segawa, T ×
Naert, Antoon
Sano, M #
Issue Date: Jan-1998
Publisher: American physical soc
Series Title: Physical Review E vol:57 issue:1 pages:557-560
Abstract: We analyzed temperature time series recorded in different positions across the boundary layers of a Rayleigh-Benard convection cell using mercury (Pr=0.024) for Rayleigh numbers (Ra) ranging from 10(6) to 10(8). In the whole range of Ra, several nondimensional quantities have unique, Ra-invariant profiles, if distance is normalized by the thermal boundary layer thickness. This indicates an asymptotic regime of thermal turbulence in which two boundary layers are coupled. Skewness and its time derivative of thermal fluctuations reveal that temperature fluctuations are not buoyancy driven but passively swept by the mean circulation in most of the cell.
ISSN: 1063-651X
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Archaeology, Leuven
× corresponding author
# (joint) last author

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