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Session: Lagrangian aspects of turbulence 3
Session starts: Thursday 27 August, 15:00
Presentation starts: 16:15
Room: Room F

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Sergio Chibbaro (UPMC Paris)
Francesco Zonta ()

Abstract:
Using passive tracers as sensors, we obtain Lagrangian measurements of tracers position, velocity and temperature in Rayleigh-Bénard convection at Ra=10^7-10^9. We report on statistics of temperature, velocity, and heat transport (Nusselt number). We observe that the Nusselt number is characterized by a largely intermittent behavior, likely due to the interaction of temperature with turbulent velocity fluctuations.