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MEASUREMENT OF THE TEMPERATURE FIELD IN A RAYLEIGH-BENARD TURBULENT CONVECTION CELL BY LASER INDUCED FLUORESCENCE

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The temperature field in a Rayleigh-Bénard convection cell is an important information for the understanding of the physical mechanism of the convection. By use of the LIF (Laser Induced Fluorescence) technique, the temperature field is first measured around a single rising plume in a quasi-infinite media, then in a cylindrical cell of aspect ratio one. Plumes are not emitted regularly in a turbulent Rayleigh-Bénard convection cell and statistics on plumes have been completed.

Author(s):

Denis Funfschilling    
LRGP/CNRS
France

Guillaume Castanet    
LEMTA/CNRS
France

Nicolas Rimbert    
LEMTA/CNRS
France