LARGE SCALE CIRCULATION IN TURBULENT RAYLEIGH-BÉNARD CONVECTION etc15 Tracking Number 200Presentation: Session: Thermally driven turbulence 1 Room: Room I Session start: 10:30 Thu 27 Aug 2015 Tomáš Králík kralik@isibrno.cz Affifliation: Institute of Scientific Instruments of the CAS, v.v.i., Královopolská 147, 612 64 Brno, Czech Republic Marco La Mantia lamantia@nbox.troja.mff.cuni.cz Affifliation: Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 121 16 Prague, Czech Republic Ladislav Skrbek skrbek@fzu.cz Affifliation: Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 121 16 Prague, Czech Republic Pavel Urban urban@isibrno.cz Affifliation: Institute of Scientific Instruments of the CAS, v.v.i., Královopolská 147, 612 64 Brno, Czech Republic Věra Musilová musilova@isibrno.cz Affifliation: Institute of Scientific Instruments of the CAS, v.v.i., Královopolská 147, 612 64 Brno, Czech Republic Topics: - Thermally driven turbulence 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. |