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11:00
15 mins
LARGE SCALE CIRCULATION IN TURBULENT RAYLEIGH-BÉNARD CONVECTION
Tomáš Králík, Marco La Mantia, Ladislav Skrbek, Pavel Urban, Věra Musilová
Session: Thermally driven turbulence 1
Session starts: Thursday 27 August, 10:30
Presentation starts: 11:00
Room: Room I


Tomáš Králík (Institute of Scientific Instruments of the CAS, v.v.i., Královopolská 147, 612 64 Brno, Czech Republic)
Marco La Mantia (Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 121 16 Prague, Czech Republic)
Ladislav Skrbek (Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 121 16 Prague, Czech Republic)
Pavel Urban (Institute of Scientific Instruments of the CAS, v.v.i., Královopolská 147, 612 64 Brno, Czech Republic)
Věra Musilová (Institute of Scientific Instruments of the CAS, v.v.i., Královopolská 147, 612 64 Brno, Czech Republic)


Abstract:
Statistical properties of turbulent Rayleigh-Bénard convection (RBC) are investigated experimentally in a cylindrical cell of aspect ratio one. We specifically analyze the large scale circulation of RBC based on measurements of temperature fluctuations by small Ge sensors placed inside the cell. The resulting dependencies of Reynolds numbers on Rayleigh number up to 2x10^13 are compared to available theoretical and experimental results for similar geometries.