Statistics and scaling properties of temperature field in symmetrical non-Oberbeck-Boussinesq turbulent convection

Abstract

The influence of symmetrical non-Oberbeck-Boussinesq (SNOB) effect on statistical and scaling properties of temperature field in turbulent convection is investigated experimentally in $S{F}_6$ in the vicinity of its gas-liquid critical point (CP). The main conclusion of the studies is that besides the strong $Ra$ and $Pr$ dependence of the rms of temperature fluctuations normalized by the temperature difference across the cell, different from the Oberbeck-Boussinesq (OB) case of turbulent convection, all rest of statistical and scaling properties of temperature field discussed in details are the same as in the OB case.

28 pages, 25 figures

References in corpus (5)

• Origin of the Temperature Oscillation in Turbulent Thermal Convection
• High Rayleigh number turbulent convection in a gas near the gas-liquid critical point
• Spectra and statistics of velocity and temperature fluctuations in turbulent convection
• Passive scalar intermittency in low temperature helium flows
• Is the Kelvin Theorem Valid for High-Reynolds-Number Turbulence?

Cited by in corpus (1)

• Azimuthal diffusion of the large-scale-circulation plane, and absence of significant non-Boussinesq effects, in turbulent convection near the ultimate-state transition